Fix github action

.github/workflows/master.yml

@@ -2,11 +2,11 @@ name: Build and Deploy
 on:
   push:
     branches: [master]
-permissions:
-  contents: write
-
+
 jobs:
   build-and-deploy:
+    permissions:
+      contents: write
     runs-on: ubuntu-latest
     steps:
       - name: Checkout 🛎️
@@ -22,13 +22,14 @@ jobs:
           key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
       - name: Install and Build 🔧
         run: |
-          npm install --no-optional reveal-md
+          npm install --omit=optional reveal-md
           mkdir build
           cp -r img build/
-          ./node_modules/.bin/reveal-md --preprocessor includes.js --css custom.css --assets-dir build --static build slides.md
+          touch build/.nojekyll
+          ./node_modules/.bin/reveal-md --preprocessor ../../../includes.js --css custom.css --static build slides.md
       - name: Deploy 🚀
         uses: JamesIves/github-pages-deploy-action@releases/v3
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           BRANCH: gh-pages
-          FOLDER: build
+          FOLDER: build