Change "remote tracking" to "remote-tracking"

Fix a typo ("remote remote-tracking") going back to the big cleanup
in 2010 (8b3f3f84 etc). Also, remove some more occurrences of
"tracking" and "remote tracking" in favor of "remote-tracking".

Signed-off-by: Michael Schubert <mschub@elegosoft.com>
Reviewed-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/clone.c

@@ -697,7 +697,7 @@ static void write_refspec_config(const char* src_ref_prefix,
 			/*
 			 * otherwise, the next "git fetch" will
 			 * simply fetch from HEAD without updating
-			 * any remote tracking branch, which is what
+			 * any remote-tracking branch, which is what
 			 * we want.
 			 */
 		} else {