added branch 18 to ci/cd for testing

Author: MatInGit

.github/workflows/docs.yml

@@ -2,7 +2,7 @@ name: Build & Deploy Sphinx Docs
 
 on:
   push:
-    branches: [20-documentation]
+    branches: [18-improved-model-getting-and-examples]
 
 permissions:
   contents: read