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/linux/collectd.md

@@ -3,10 +3,6 @@
 > System statistics collection daemon.
 > More information: <https://collectd.org/>.
 
-- Show usage help, including the program version:
-
-`collectd -h`
-
 - Test the configuration file and then exit:
 
 `collectd -t`
@@ -30,3 +26,7 @@
 - Don't fork into the background:
 
 `collectd -f`
+
+- Display help and version:
+
+`collectd -h`