pages/*: reword descriptions without using "a CLI for" etc. (#10437)

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

pages/common/emulator.md

@@ -1,12 +1,8 @@
 # emulator
 
-> Manager Android emulators from the command-line.
+> Manage Android emulators.
 > More information: <https://developer.android.com/studio/run/emulator-commandline>.
 
-- Display the help:
-
-`emulator -help`
-
 - Start an Android emulator device:
 
 `emulator -avd {{name}}`
@@ -34,3 +30,7 @@
 - Start an emulator with a given SD card partition image file:
 
 `emulator -avd {{name}} -sdcard {{path/to/sdcard.img}}`
+
+- Display help:
+
+`emulator -help`