git-rev-parse.txt: Add more examples for caret and colon
git-rev-parse.txt: Add more examples for caret and colon

Several items in the caret, colon and friends section contain examples
already. Make sure they all come with examples, and that examples come
early so that they serve as a visual guide, as well.

Signed-off-by: Michael J Gruber <46f1a0bd5592a2f9244ca321b129902a06b53e03@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git