merge: add missing word "strategy" to a message

The variable 'best_strategy' holds the name of the merge strategy that
resulted in fewer conflicts, if several strategies were tried. When
that's the case but the best strategy was not the first one tried, we
inform the user which strategy was the "best" one before recreating the
merge and leaving the conflicted files in the tree.

This informational message is missing the word "strategy", so it shows
something like:

    Using the recursive to prepare resolving by hand.

Fix that.

Signed-off-by: Philippe Blain <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: phil-blain

builtin/merge.c

@@ -1715,7 +1715,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 	else {
 		printf(_("Rewinding the tree to pristine...\n"));
 		restore_state(&head_commit->object.oid, &stash);
-		printf(_("Using the %s to prepare resolving by hand.\n"),
+		printf(_("Using the %s strategy to prepare resolving by hand.\n"),
 			best_strategy);
 		try_merge_strategy(best_strategy, common, remoteheads,
 				   head_commit);