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/pio.md

@@ -8,10 +8,10 @@
 
 `pio --help`
 
-- Print the version number and exit:
-
-`pio --version`
-
 - Display help for a specific subcommand:
 
 `pio {{subcommand}} --help`
+
+- Display version:
+
+`pio --version`