fit the manifest description into the registry limit

The registry caps ServerDetail.description at 100 characters; the
review-notifications rewrite ran to 151 and 422'd the v1.1.1 publish.
The schema constrains only description, name, title, and version --
the environment-variable descriptions are unconstrained.

Verify: curl the server.schema.json and check maxLength fields against
server.json values.

Author: xobotyi

server.json

@@ -2,7 +2,7 @@
   "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
   "name": "team.gaijin/go-gerrit-mcp",
   "title": "Gerrit Code Review",
-  "description": "Capability-gated MCP tools for Gerrit code review: search, read diffs, comment, vote, transition, and opt-in review notifications pushed into the session",
+  "description": "Capability-gated Gerrit code review tools with opt-in review notifications pushed into the session",
   "version": "0.0.0",
   "repository": {
     "url": "https://github.com/GaijinEntertainment/go-gerrit-mcp",