Fix spelling mistakes (comments only) (#25564)

Original Author : klemens <ka7@github.com>

Taking over previous PR as per
https://github.com/ansible/ansible/pull/23644#issuecomment-307334525

Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>

lib/ansible/modules/files/blockinfile.py

@@ -71,7 +71,7 @@ options:
       - If specified, the block will be inserted after the last match of
         specified regular expression. A special value is available; C(EOF) for
         inserting the block at the end of the file.  If specified regular
-        expresion has no matches, C(EOF) will be used instead.
+        expression has no matches, C(EOF) will be used instead.
     choices: [ 'EOF', '*regex*' ]
   insertbefore:
     required: false
@@ -80,7 +80,7 @@ options:
       - If specified, the block will be inserted before the last match of
         specified regular expression. A special value is available; C(BOF) for
         inserting the block at the beginning of the file.  If specified regular
-        expresion has no matches, the block will be inserted at the end of the
+        expression has no matches, the block will be inserted at the end of the
         file.
     choices: [ 'BOF', '*regex*' ]
   create:

lib/ansible/modules/files/stat.py

@@ -404,7 +404,7 @@ def format_output(module, path, st):
         isgid=bool(mode & stat.S_ISGID),
     )
 
-    # Platform dependant flags:
+    # Platform dependent flags:
     for other in [
             # Some Linux
             ('st_blocks', 'blocks'),