Use "Command-Line" instead of "Command Line"

Fix title of CLI reference to use "command-line".

Change-Id: I77ed17a828f9285f33dd8826f646484f4d35d283
Change command line to command-line

Use "command-line" if it's used as an adjective, for example
"command-line tool".

Improve capitalization and tagging.

Change-Id: I43c73ff295d3b6d0ad43c3c20566ce7bf3742c00
Merge "Use "Command-Line" instead of "Command Line""
Merge "Change command line to command-line"