Build docs on pushes to master only

.github/workflows/build-docs.yaml

@@ -5,7 +5,7 @@ name: Build and deploy documentation
 on:
   # Runs on pushes targeting the default branch
   push:
-    branches: ["master", "prepare_release"]
+    branches: ["master"]
 
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch:
@@ -30,10 +30,10 @@ jobs:
       # https://www.mkdocs.org
       - name: Install MkDocs and its dependencies
         run: >
-          python -m pip install 
-          mkdocs 
-          mkdocs-material 
-          mkdocs-jupyter 
+          python -m pip install
+          mkdocs
+          mkdocs-material
+          mkdocs-jupyter
           mkdocstrings-python
 
       # Build the static files