adding fo to allowed word list for spelling checks

Author: betolink

.github/workflows/qaqc.yaml

@@ -36,7 +36,7 @@ jobs:
           check_filenames: true
           check_hidden: true
           skip: ".git,*.js,qaqc.yml"
-          ignore_words_list: hist,nd
+          ignore_words_list: hist,nd,fo
 
       # borrowed from https://github.com/ProjectPythia/pythia-foundations/blob/main/.github/workflows/link-checker.yaml
       - name: Disable Notebook Execution Before Linkcheck