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/boot.md

@@ -11,10 +11,6 @@
 
 `boot jar`
 
-- Learn about a command:
-
-`boot cljs --help`
-
 - Generate scaffolding for a new project based on a template:
 
 `boot --dependencies boot/new new --template {{template_name}} --name {{project_name}}`
@@ -26,3 +22,7 @@
 - Build for production (if using the boot/new template):
 
 `boot prod`
+
+- Display help for a specific task:
+
+`boot {{task}} --help`