fix(checker): alertmanager match rule (#2562)

Author: EamonZhang

scripts/checker.py

@@ -30,7 +30,7 @@
         "name": "alertmanager",
         "type": "github",
         "owner": "prometheus",
-        "match": "^v[2-9]{1,}\.[0-9]{1,}\.[0-9]{1,}$",
+        "match": "^v[0-9]{1,}\.[0-9]{1,}\.[0-9]{1,}$",
     },
     "cloudbeaver": {
         "name": "cloudbeaver",