push: re-flow non-fast-forward message

The extreme raggedness of the right edge make this jarring
to read. Let's re-flow the text to fill the lines in a more
even way.
Signed-off-by: NJeff King <peff@peff.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

builtin-push.c

@@ -158,9 +158,9 @@ static int do_push(const char *repo, int flags)
 
 		error("failed to push some refs to '%s'", url[i]);
 		if (nonfastforward) {
-			printf("To prevent you from losing history, non-fast-forward updates were rejected.\n"
-			       "Merge the remote changes before pushing again.\n"
-			       "See the 'non-fast forward' section of 'git push --help' for details.\n");
+			printf("To prevent you from losing history, non-fast-forward updates were rejected\n"
+			       "Merge the remote changes before pushing again.  See the 'non-fast forward'\n"
+			       "section of 'git push --help' for details.\n");
 		}
 		errs++;
 	}