fix: correct packageManager's format (fix #7)

Author: w2xi

package.json

@@ -2,7 +2,7 @@
   "name": "leetcode-practice",
   "type": "module",
   "version": "1.0.4",
-  "packageManager": "yarn@1.22.0+",
+  "packageManager": "yarn@1.22.0",
   "description": "A powerful practice platform for leetcode.Using any way you want to create questions.",
   "author": {
     "name": "EternalHeart",