Add data to marketplace

.claude-plugin/marketplace.json

@@ -686,15 +686,15 @@
       "homepage": "https://github.com/semgrep/mcp-marketplace.git"
     },
     {
-      "name": "mintlify",
-      "description": "Build beautiful documentation sites with Mintlify. Convert non-markdown files into properly formatted MDX pages, add and modify content with correct component use, and automate documentation updates.",
+      "name": "data",
+      "description": "Data engineering for Apache Airflow and Astronomer. Author DAGs with best practices, debug pipeline failures, trace data lineage, profile tables, migrate Airflow 2 to 3, and manage local and cloud deployments.",
       "category": "development",
       "source": {
         "source": "url",
-        "url": "https://github.com/mintlify/mintlify-claude-plugin.git",
-        "sha": "ce435be18a700dc849d6a63a80da4816d1e2128c"
+        "url": "https://github.com/astronomer/agents.git",
+        "sha": "7ef022b02f5296b5ecc52ba0db3ba9345ec03c9e"
       },
-      "homepage": "https://www.mintlify.com/"
+      "homepage": "https://github.com/astronomer/agents"
     }
   ]
 }