doc: use reST note directive
The 'NOTE: bla bla' syntax was for asciidoc and is still present in a
couple of docstrings. The docstrings will be converted to reST format
when minirst knows how to handle it.
#!/bin/sh
hg
hg -q
hg help
hg -q help
hg add -h
hg add --skjdfks
hg help diff
hg help status
hg -q help status
hg help foo
hg skjdfks
exit 0