Update Gitea version in docs (go-gitea#10772)

Author: jolheiser

docs/config.yaml

@@ -18,7 +18,7 @@ params:
   description: Git with a cup of tea
   author: The Gitea Authors
   website: https://docs.gitea.io
-  version: 1.11.2
+  version: 1.11.3
   minGoVersion: 1.11
   goVersion: 1.13
   minNodeVersion: 10