[release-12.1.3] Chore: Fix @grafana/alerting package repo (#111531)

Chore: Fix @grafana/alerting package repo (#110939)

(cherry picked from commit ab3c93b279)

Co-authored-by: Josh Hunt <joshhunt@users.noreply.github.com>

packages/grafana-alerting/package.json

@@ -14,7 +14,7 @@
   "sideEffects": false,
   "repository": {
     "type": "git",
-    "url": "git+http://github.com/grafana/grafana.git",
+    "url": "http://github.com/grafana/grafana.git",
     "directory": "packages/grafana-alerting"
   },
   "main": "src/index.ts",