ci: Fix Cloudflare Pages deployment

The project name variable was in repository variables, not in environment variables

Author: Ushie

.github/workflows/deploy.yml

@@ -31,7 +31,7 @@ jobs:
         with:
           apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
           accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
-          projectName: ${{ env.CLOUDFLARE_PROJECT_NAME }}
+          projectName: ${{ vars.CLOUDFLARE_PROJECT_NAME }}
           directory: public
         id: publish