fix: publish book on main only

Author: leruaa

.github/workflows/book.yml

@@ -1,58 +1,56 @@
 name: book
 
 on:
-    push:
-        branches: [main]
-    pull_request:
-        branches: [main]
-        paths:
-            - "book/**"
-    merge_group:
+  push:
+    branches: [main]
+    paths:
+      - "book/**"
+  merge_group:
 
 jobs:
-    build:
-        name: Build Docusaurus
-        runs-on: ubuntu-latest
-        steps:
-            - uses: actions/checkout@v4
-              with:
-                  fetch-depth: 0
-            - uses: actions/setup-node@v4
-              with:
-                  node-version: 18
-
-            - name: Install dependencies
-              run: cd book && yarn install --frozen-lockfile
-            - name: Build website
-              run: |
-                cd book
-                yarn build-api
-                mv ../target/doc ./static/api
-                mv ./static/api/static.files/* ./static/api
-                rmdir ./static/api/static.files
-                yarn build-book
-
-            - name: Upload Build Artifact
-              uses: actions/upload-pages-artifact@v3
-              with:
-                  path: book/build
-
-    deploy:
-        name: Deploy to GitHub Pages
-        needs: build
-
-        # Grant GITHUB_TOKEN the permissions required to make a Pages deployment
-        permissions:
-            pages: write # to deploy to Pages
-            id-token: write # to verify the deployment originates from an appropriate source
-
-        # Deploy to the github-pages environment
-        environment:
-            name: github-pages
-            url: ${{ steps.deployment.outputs.page_url }}
-
-        runs-on: ubuntu-latest
-        steps:
-            - name: Deploy to GitHub Pages
-              id: deployment
-              uses: actions/deploy-pages@v4
+  build:
+    name: Build Docusaurus
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 18
+
+      - name: Install dependencies
+        run: cd book && yarn install --frozen-lockfile
+      - name: Build website
+        run: |
+          cd book
+          yarn build-api
+          mv ../target/doc ./static/api
+          mv ./static/api/static.files/* ./static/api
+          rmdir ./static/api/static.files
+          yarn build-book
+
+      - name: Upload Build Artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: book/build
+
+  deploy:
+    name: Deploy to GitHub Pages
+    needs: build
+
+    # Grant GITHUB_TOKEN the permissions required to make a Pages deployment
+    permissions:
+      pages: write # to deploy to Pages
+      id-token: write # to verify the deployment originates from an appropriate source
+
+    # Deploy to the github-pages environment
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    runs-on: ubuntu-latest
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4