docs: improved contributing and coding standard docs (#27280)

Author: alkavats1

CONTRIBUTING.md

@@ -257,8 +257,8 @@ A detailed explanation can be found in this [document][commit-message-format].
 Please sign our Contributor License Agreement (CLA) before sending pull requests. For any code
 changes to be accepted, the CLA must be signed. It's a quick process, we promise!
 
-* For individuals we have a [simple click-through form][individual-cla].
-* For corporations we'll need you to
+* For individuals, we have a [simple click-through form][individual-cla].
+* For corporations, we'll need you to
   [print, sign and one of scan+email, fax or mail the form][corporate-cla].