fix(docs): fix cache action (#93)

.github/workflows/docs.yml

@@ -2,7 +2,7 @@ name: Documentation
 
 on:
   push:
-    branches: [ main ]
+    branches: [main]
 
 permissions:
   contents: write
@@ -11,47 +11,47 @@ jobs:
   docs:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+      - uses: actions/checkout@v2
 
-    - name: Cache mdbook installation
-      uses: actions/cache@v2
-      with:
-        path: ~/.cargo/bin/mdbook
-        key: ${{ runner.os }}-mdbook
+      - name: Cache mdbook installation
+        uses: actions/cache@v3
+        with:
+          path: ~/.cargo/bin/mdbook
+          key: ${{ runner.os }}-mdbook
 
-    - name: Cache mdbook-mermaid installation
-      uses: actions/cache@v2
-      with:
-        path: ~/.cargo/bin/mdbook
-        key: ${{ runner.os }}-mdbook-mermaid
+      - name: Cache mdbook-mermaid installation
+        uses: actions/cache@v3
+        with:
+          path: ~/.cargo/bin/mdbook
+          key: ${{ runner.os }}-mdbook-mermaid
 
-    - name: Install mdBook if not installed already
-      run: |
-        if [ ! -f ~/.cargo/bin/mdbook ]; then
-          cargo install mdbook
-        fi
+      - name: Install mdBook if not installed already
+        run: |
+          if [ ! -f ~/.cargo/bin/mdbook ]; then
+            cargo install mdbook
+          fi
 
-    - name: Install mdBook-mermaid if not installed already
-      run: |
-        if [ ! -f ~/.cargo/bin/mdbook-mermaid ]; then
-          cargo install mdbook-mermaid
-        fi
+      - name: Install mdBook-mermaid if not installed already
+        run: |
+          if [ ! -f ~/.cargo/bin/mdbook-mermaid ]; then
+            cargo install mdbook-mermaid
+          fi
 
-    - name: Cache mdBook build
-      id: mdbook-build-cache
-      uses: actions/cache@v3
-      with:
-        path: ./docs/book/
-        key: ${{ runner.os }}-mdbook-${{ hashFiles('./docs/**') }}
-        restore-keys: |
-          ${{ runner.os }}-mdbook-
+      - name: Cache mdBook build
+        id: mdbook-build-cache
+        uses: actions/cache@v3
+        with:
+          path: ./docs/book/
+          key: ${{ runner.os }}-mdbook-${{ hashFiles('./docs/**') }}
+          restore-keys: |
+            ${{ runner.os }}-mdbook-
 
-    - name: Build the book
-      if: steps.mdbook-build-cache.outputs.cache-hit != 'true'
-      run: mdbook build ./docs/
+      - name: Build the book
+        if: steps.mdbook-build-cache.outputs.cache-hit != 'true'
+        run: mdbook build ./docs/
 
-    - name: Deploy book to GitHub Pages
-      uses: peaceiris/actions-gh-pages@v3
-      with:
-        github_token: ${{ secrets.GITHUB_TOKEN }}
-        publish_dir: ./docs/book/
+      - name: Deploy book to GitHub Pages
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./docs/book/