gregex: Clarify units in documentation
gregex: Clarify units in documentation

Make it a bit clearer that all lengths passed to GRegex methods are in
bytes (not characters). This is mentioned in the section overview, but
who reads that?

Signed-off-by: Philip Withnall <withnall@endlessm.com>

https://bugzilla.gnome.org/show_bug.cgi?id=748620

endlessm/glib,endlessm/glib,endlessm/glib,endlessm/glib,endlessm/glib