fix: update codeblocks to use sh syntax

src/content/archives/what-is-graphql.md

@@ -8,7 +8,7 @@ GraphQL was created internally by Facebook in 2012, mainly to optimize the netwo
 
 1. GraphQL resolves the issues of underfetching, and overfetching of REST. For example, if you were to retrieve a user, its name, and the title of his posts, REST would end up over and under fetching this :
 
-```
+```sh
 /users/5
 /users/5/posts
 ```

src/content/archives/what-is-redis.md

@@ -32,7 +32,7 @@ It's not uncommon to use both RDB and AOF together to take advantage of the incr
 
 The simplest operation in Redis is `GET`/`SET`.
 
-```
+```sh
 127.0.0.1:6379> SET some_key "Hello, Redis"
 OK
 127.0.0.1:6379> GET some_key
@@ -41,7 +41,7 @@ OK
 
 You can also set an expiration time on keys with `SETEX`/`PSETEX`. `SETEX` uses seconds for the expiration value, and `PSETEX` uses milliseconds.
 
-```
+```sh
 127.0.0.1:6379> SETEX expiring_key 10 "Goodbye, Redis"
 OK
 127.0.0.1:6379> GET expiring_key
@@ -50,14 +50,14 @@ OK
 
 If you run the same command after ten seconds have passed, the key no longer exists.
 
-```
+```sh
 127.0.0.1:6379> GET expiring_key
 (nil)
 ```
 
 You can set a key only if it doesn't exist (`SETNX`, `SET ... NX`) or only if it already exists. (`SET ... XX`)
 
-```
+```sh
 127.0.0.1:6379> SETNX existing_key "This key was free."
 OK
 127.0.0.1:6379> SETNX existing_key "The key is no longer free, so this will fail."
@@ -68,14 +68,14 @@ OK
 
 As you can see, if a `SET` operation is successful, it returns `OK`, otherwise it returns nothing, represented as `(nil)` in the CLI. Both the expiration time, and the create if (not) exists options can be set in the basic `SET` command as well.
 
-```
+```sh
 127.0.0.1:6379> SET magical_key "This key has several options set." EX 10 NX
 OK
 ```
 
 Now, let's check out some more complex datatypes. One of the datatypes that Redis supports are hashes. Like hashes in any programming language, one key has many fields.
 
-```
+```sh
 127.0.0.1:6379> HSET example_hash name "Caff"
 (integer) 1
 127.0.0.1:6379> HSET example_hash age 24
@@ -95,7 +95,7 @@ Now, let's check out some more complex datatypes. One of the datatypes that Redi
 
 You can also set multiple fields in a single command. The number it returns is the number of new fields created, so updating existing fields doesn't increase that number.
 
-```
+```sh
 127.0.0.1:6379> HSET example_hash discord "The Programmer's Hangout" discriminator "0001" age 25
 (integer) 2
 127.0.0.1:6379> HGETALL example_hash
@@ -111,7 +111,7 @@ You can also set multiple fields in a single command. The number it returns is t
 
 Another datastructure is Sorted Sets. These are essentially arrays, in which each item has a score. `ZRANGE` allows you to retrieve a range of items in the sorted set, ordered by score. It allows you to provide indexes, starting at zero. Negative indexes are from the end of the set, so `0 -1` means all items in the set, since -1 is the last item.
 
-```
+```sh
 127.0.0.1:6379> ZADD high_scores 100000 "PinballWizard" 80000 "Elliott" 50000 "Caff" 25000 "HotBot"
 (integer) 4
 127.0.0.1:6379> ZRANGE high_scores 0 -1 WITHSCORES
@@ -127,7 +127,7 @@ Another datastructure is Sorted Sets. These are essentially arrays, in which eac
 
 By default, Redis sorts by the lowest scores first. For sorting/displaying data, Redis also provides reversed functions for displaying the highest scores first.
 
-```
+```sh
 127.0.0.1:6379> ZREVRANGE high_scores 0 -1 WITHSCORES
 1) "PinballWizard"
 2) "100000"
@@ -143,7 +143,7 @@ By default, Redis sorts by the lowest scores first. For sorting/displaying data,
 
 Redis also has some functions for geospatial data. Internally, Geospatial data is stored using a sorted set. The Geo functions allow you to get the distance between two members, get all members within a radius of a certain point/member.
 
-```
+```sh
 127.0.0.1:6379> GEOADD some_cities 2.354493 48.862773 "Paris" -0.117431 51.506906 "London" 10.000977 53.538554 "Hamburg" 21.01412 52.210929 "Warsaw" -122.423435 37.771993 "San Francisco" 37.649808 55.753146 "Moscow" 72.911566 19.093070 "Mumbai" 18.500058 -33.865797 "Cape Town"
 (integer) 8
 127.0.0.1:6379> GEODIST some_cities "London" "Hamburg" km
@@ -175,7 +175,7 @@ Redis also has some functions for geospatial data. Internally, Geospatial data i
 
 Redis also offers a publish/subscription system, to listen for real-time events via channels.
 
-```
+```sh
 127.0.0.1:6379> SUBSCRIBE tweets
 Reading messages... (press Ctrl-C to quit)
 1) "subscribe"
@@ -185,14 +185,14 @@ Reading messages... (press Ctrl-C to quit)
 
 Another client could then run `PUBLISH` to push messages to all listening clients.
 
-```
+```sh
 127.0.0.1:6379> PUBLISH tweets "@RedisLabs just tweeted \"This is a Redis example.\""
 (integer) 1
 ```
 
 The listening clients would then receive the following.
 
-```
+```sh
 1) "message"
 2) "tweets"
 3) "@TheProgrammersHangout just tweeted \"This is a Redis example.\""
@@ -200,7 +200,7 @@ The listening clients would then receive the following.
 
 Redis' pub/sub implementation also supports pattern-matching for channels.
 
-```
+```sh
 127.0.0.1:6379> PSUBSCRIBE tweets:*
 Reading messages... (press Ctrl-C to quit)
 1) "psubscribe"
@@ -212,7 +212,7 @@ Any messages published to channels beginning with `tweets:` would be retireved b
 
 If the following messages were published:
 
-```
+```sh
 127.0.0.1:6379> PUBLISH tweets:follow "John just followed."
 (integer) 1
 127.0.0.1:6379> PUBLISH tweets:retweet "Eric retweeted your Tweet"
@@ -221,7 +221,7 @@ If the following messages were published:
 
 A subscribed client would recieve the following:
 
-```
+```sh
 1) "pmessage"
 2) "tweets:*"
 3) "tweets:follow"

src/content/resources/cpp/multidimensional-arrays.md

@@ -28,7 +28,7 @@ To create multidimensional array, you do it like a regular array but with a extr
 
 Use
 
-```
+```c++
 data_type array_name[A][B];
 ```
 

src/content/resources/java/inheritance.md

@@ -13,7 +13,7 @@ Inheritance is the idea that when two classes have similar implementations, rath
 its parent class.
 Here is an example of a class hierarchy:
 
-```
+```sh
           Animal
        _____|______
       |            |
@@ -24,7 +24,7 @@ Animal is the parent class (also called the superclass), Dog and Bird are both c
 **NOTE:** A child class will only have 1 direct parent (known as single inheritance), not more.
 Here is an example of an illegal class hierarchy in Java:
 
-```
+```sh
 // THIS IS ILLEGAL
 // A child can only have 1 parent.
 
@@ -36,7 +36,7 @@ Here is an example of an illegal class hierarchy in Java:
 
 However, there can be many children.
 
-```
+```sh
                 Animal
              _____|______
             |            |