Improve `logcat --help`.

Reformat everything to fit in 80 columns for legibility.

Make -h and --help the same (the latter wasn't including the FORMAT help)
by just always including the FORMAT help.

Make the formatting and wording a bit more consistent with Unix style.

Bug: https://issuetracker.google.com/270981896
Test: `logcat --help`
Change-Id: I0d6cc2f31a7d67eb80ab6da712334ed223faa2d7
1 file changed
tree: f5b38a783049d5bbe5d101473e3a5fb318af625e
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/
  5. rust/
  6. OWNERS
  7. PREUPLOAD.cfg
  8. TEST_MAPPING