pages*: make help and version commands comply with the style guide (#12107)

* pages*: use generic word for help

* git: add newline to the end

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

* pages*: make help and version commands comply with the style guide

* java: fix Java name

---------

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

pages/common/aws-codecommit.md

@@ -3,10 +3,10 @@
 > A managed source control service that hosts private Git repositories.
 > More information: <https://docs.aws.amazon.com/cli/latest/reference/codecommit/>.
 
-- Display help for a specific command:
-
-`aws codecommit {{command}} help`
-
 - Display help:
 
 `aws codecommit help`
+
+- Display help for a specific command:
+
+`aws codecommit {{command}} help`