Simplify ai-dlc plugin source configuration

Updated the source field for the ai-dlc plugin to simplify its configuration.

Author: jwaldrip

.claude-plugin/marketplace.json

@@ -12,11 +12,7 @@
     {
       "name": "ai-dlc",
       "description": "AI-DLC methodology - iterative AI-driven development with hat-based workflows, completion criteria, and automatic context preservation",
-      "source": {
-        "source": "git-subdir",
-        "url": "TheBushidoCollective/ai-dlc",
-        "path": "plugin"
-      },
+      "source": "plugin",
       "category": "Pattern",
       "keywords": [
         "ai-dlc",