Fixing comment in merge strategies

Comments in both these strategies refer to the wrong number
of remotes
Signed-off-by: NTom Clarke <tom@u2i.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

git-merge-resolve.sh

@@ -25,7 +25,7 @@ do
 	esac
 done
 
-# Give up if we are given more than two remotes -- not handling octopus.
+# Give up if we are given two or more remotes -- not handling octopus.
 case "$remotes" in
 ?*' '?*)
 	exit 2 ;;

git-merge-stupid.sh

@@ -24,7 +24,7 @@ do
 	esac
 done
 
-# Give up if we are given more than two remotes -- not handling octopus.
+# Give up if we are given two or more remotes -- not handling octopus.
 case "$remotes" in
 ?*' '?*)
 	exit 2 ;;