url info: minor fix typo in a comment

dvc/path_info.py

@@ -186,7 +186,7 @@ class URLInfo(object):
     def __getattr__(self, name):
         # When deepcopy is called, it creates and object without __init__,
         # self.parsed is not initialized and it causes infinite recursion.
-        # More on this special ca   sing here:
+        # More on this special casing here:
         # https://stackoverflow.com/a/47300262/298182
         if name.startswith("__"):
             raise AttributeError(name)