Try to fix 3.3's docs

- Remove 3.3.x as there are no more 3.3 snapshots.
- Hardcode v3.3.13 as latest-version-extension does not appear to
  work with ranges

See gh-46451

Author: wilkinsona

antora-playbook.yml

@@ -31,11 +31,10 @@ content:
   sources:
   - url: .
     branches:
-    - '3.3.x'
     - '3.4.x'
     - '3.5.x'
     tags:
-    - 'v3.3.{0..13}'
+    - 'v3.3.13'
     - 'v3.4.*'
     - 'v3.5.*'
     start_paths: