chore: update server description to remove registry reference

Author: mariomarcolongo

mcp/server.json

@@ -2,7 +2,7 @@
   "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
   "name": "org.yourselftoscience/catalogue",
   "title": "Yourself to Science",
-  "description": "Search an open CC0 catalogue of clinical trials, biobanks, registries, and data/sample donation programs where people contribute to research.",
+  "description": "Search an open CC0 catalogue of clinical trials, biobanks, and data donation programs.",
   "repository": { "url": "https://github.com/yourselftoscience/yourselftoscience.org", "source": "github" },
   "version": "1.0.0",
   "remotes": [{ "type": "streamable-http", "url": "https://mcp.yourselftoscience.org/mcp" }]