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/gh-alias.md

@@ -3,10 +3,6 @@
 > Manage GitHub CLI command aliases.
 > More information: <https://cli.github.com/manual/gh_alias>.
 
-- Display the subcommand help:
-
-`gh alias`
-
 - List all the aliases `gh` is configured to use:
 
 `gh alias list`
@@ -22,3 +18,7 @@
 - Delete a command shortcut:
 
 `gh alias delete {{alias_name}}`
+
+- Display the subcommand help:
+
+`gh alias`