More tweaks of branch fetch

.github/workflows/github_action_build_docs.yml

@@ -24,12 +24,10 @@ jobs:
       - name: Checkout 0.9.5 branch 
         uses: actions/checkout@v2
         with:
-            path: v0.9.5
+            ref: v0.9.5
 
       - name: Checkout develop branch 
         uses: actions/checkout@v2
-        with:
-            path: develop
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v2

docs/Makefile

@@ -3,7 +3,6 @@
 SOURCEDIR     = source
 BUILDDIR      = build
 AUTODOCDIR = $(SOURCEDIR)/api
-#
 # You can set these variables from the command line, and also
 # from the environment for the first two.
 SPHINXOPTS    ?=