Fix workflow to display 16.11 (#900)

This PR updates the workflow file from .10 to .11

Author: Andriciuc

.github/workflows/main.yml

@@ -43,7 +43,7 @@ jobs:
       - name: Deploy docs
         run: |
           mike deploy 16 -b publish -p
-          mike retitle 16 "16.10" -b publish -p
+          mike retitle 16 "16.11" -b publish -p
 
 # - name: Install Node.js 14.x
 #        uses: percona-platform/setup-node@v2