Update main.yml

Author: mcbarton

.github/workflows/main.yml

@@ -274,8 +274,7 @@ jobs:
           micromamba activate xeus-lite-host
           python -m pip install jupyterlite-xeus
           jupyter lite build --XeusAddon.prefix=${{ env.PREFIX }}
-          cd ${{ env.PREFIX }}
-          timeout 60 jupyter lite serve
+          timeout 60 jupyter lite serve --XeusAddon.prefix=${{ env.PREFIX }}
 
       - name: Setup tmate session
         if: ${{ failure() && runner.debug }}