Update workflow branches to use 'docsite-source' instead of 'gh-pages'

Author: 8bitAlex

.github/workflows/docs-build.yml

@@ -3,7 +3,7 @@ name: Docs Build and Test
 on:
   pull_request:
     branches:
-      - gh-pages
+      - docsite-source
 
 jobs:
   build:

.github/workflows/docs.yml

@@ -3,7 +3,7 @@ name: Deploy Docs
 on:
   push:
     branches:
-      - gh-pages
+      - docsite-source
 
 jobs:
   deploy: