Update "YOLOv5 is out of date" msg (#11061)

utils/general.py

@@ -338,7 +338,7 @@ def check_git_status(repo='ultralytics/yolov5', branch='master'):
     n = int(check_output(f'git rev-list {local_branch}..{remote}/{branch} --count', shell=True))  # commits behind
     if n > 0:
         pull = 'git pull' if remote == 'origin' else f'git pull {remote} {branch}'
-        s += f"⚠️ YOLOv5 is out of date by {n} commit{'s' * (n > 1)}. Use `{pull}` or `git clone {url}` to update."
+        s += f"⚠️ YOLOv5 is out of date by {n} commit{'s' * (n > 1)}. Use '{pull}' or 'git clone {url}' to update."
     else:
         s += f'up to date with {url} ✅'
     LOGGER.info(s)