mike: Keep using redirects for aliases

In `mike` 2.0.0 aliases use symlinks by default, but they are not
supported by GitHub Pages, so it fails to deploy.

Use the new `alias_type` option to keep using redirects.

Signed-off-by: Leandro Lucarella <[email protected]>

Author: llucax

mkdocs.yml

@@ -93,6 +93,7 @@ plugins:
   - literate-nav:
       nav_file: SUMMARY.md
   - mike:
+      alias_type: redirect
       canonical_version: latest
   - mkdocstrings:
       custom_templates: templates