Fix doc build error

Author: jcrivenaes

.github/workflows/fmu-config.yml

@@ -13,51 +13,50 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.6', '3.7', '3.8']
+        python-version: ["3.6", "3.7", "3.8"]
 
     steps:
+      - name: Checkout commit locally
+        uses: actions/checkout@v2
 
-    - name: Checkout commit locally
-      uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v1
+        with:
+          python-version: ${{ matrix.python-version }}
 
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v1
-      with:
-        python-version: ${{ matrix.python-version }}
+      - name: Check code style
+        run: |
+          pip install black
+          black --check *.py src tests docs
+          pip install flake8
+          flake8 src tests docs
 
-    - name: Check code style
-      run: |
-        pip install black
-        black --check *.py src tests docs
-        pip install flake8
-        flake8 src tests docs
+      - name: Install requirements
+        run: |
+          pip install -r requirements.txt
+          pip install -r requirements_dev.txt
+          pip install .
 
-    - name: Install requirements
-      run: |
-        pip install -r requirements.txt
-        pip install -r requirements_dev.txt
-        pip install .
+      - name: Run tests
+        run: pytest ./tests
 
-    - name: Run tests
-      run: pytest ./tests
+      - name: Syntax check documentation
+        run: rstcheck -r docs
 
-    - name: Syntax check documentation
-      run: rstcheck -r docs
+      - name: Build documentation
+        run: python setup.py build_sphinx
 
-    - name: Build documentation
-      run: python setup.py build_sphinx
-
-    - name: Update GitHub pages
-      if: github.repository_owner == 'equinor' && github.ref == 'refs/heads/master' && matrix.python-version == '3.6'
-      run: |
+      - name: Update GitHub pages
+        if: github.repository_owner == 'equinor' && github.ref == 'refs/heads/master' && matrix.python-version == '3.6'
+        run: |
           cp -R ./build/sphinx/html ../html
 
           git config --local user.email "fmu-config-github-action"
           git config --local user.name "fmu-config-github-action"
           git fetch origin gh-pages
           git checkout --track origin/gh-pages
           git clean -f -f -d -x  # Double -f is intentional
-          git rm -r *
+          git rm -r * --ignore-unmatch
 
           cp -R ../html/* .
           touch .nojekyll  # If not, github pages ignores _* directories.