fix: move changelog field above license in gates entry

Move changelog URL field to sit after documentation and before license,
matching the catalog's standard field ordering. Remove the dangling
changelog at the bottom of the entry so updated_at is the final field
with no trailing comma.

Assisted-by: GitHub Copilot (model: claude-sonnet-4.5, autonomous)

Author: Copilot

extensions/catalog.community.json

@@ -1445,6 +1445,7 @@
       "repository": "https://github.com/schwichtgit/spec-gates",
       "homepage": "https://github.com/schwichtgit/spec-gates",
       "documentation": "https://github.com/schwichtgit/spec-gates/blob/main/docs/how-it-works.md",
+      "changelog": "https://github.com/schwichtgit/spec-gates/releases",
       "license": "MIT",
       "category": "process",
       "effect": "read-write",
@@ -1484,8 +1485,7 @@
       "downloads": 0,
       "stars": 0,
       "created_at": "2026-07-09T00:00:00Z",
-      "updated_at": "2026-07-15T00:00:00Z",
-      "changelog": "https://github.com/schwichtgit/spec-gates/releases"
+      "updated_at": "2026-07-15T00:00:00Z"
     },
     "github-issues": {
       "name": "GitHub Issues Integration 1",