fix mkdocs alias names in workflows

Author: trhallam

.github/workflows/mkdocs-publish.yml

@@ -49,12 +49,12 @@ jobs:
       - name: Set latest
         if: ${{ github.ref == 'refs/heads/main' }}
         run: |
-          echo "MIKE_ALIAS='${MIKE_ALIAS} latest'" >> $GITHUB_ENV
+          echo "MIKE_ALIAS=${MIKE_ALIAS} latest" >> $GITHUB_ENV
           
       - name: Set stable
         if: ${{ github.ref_type == 'tag' && github.event.type == 'release' }}
         run: |
-          echo "MIKE_ALIAS='${MIKE_ALIAS} stable'" >> $GITHUB_ENV
+          echo "MIKE_ALIAS=${MIKE_ALIAS} stable" >> $GITHUB_ENV
           echo $MKDOCS_VERSION $MIKE_ALIAS
 
       - name: Build docs examples