Fix repository URL format for npm publish

Author: ssccio

package.json

@@ -18,7 +18,7 @@
   },
   "repository": {
     "type": "git",
-    "url": "https://github.com/ssccio/n8n-nodes-opencode.git"
+    "url": "git+https://github.com/ssccio/n8n-nodes-opencode.git"
   },
   "main": "index.js",
   "scripts": {