fix cspell config to ensure full spellcheck

.github/workflows/spellcheck.yaml

@@ -1,7 +1,11 @@
 name: 'Check spelling'
 on: # rebuild any PRs and main branch changes
-  pull_request:
   push:
+    branches:
+      - 1.0.0*
+  pull_request:
+    branches:
+      - 1.0.0*
 
 jobs:
   spellcheck: # run the action
@@ -10,10 +14,11 @@ jobs:
       - uses: actions/checkout@v4
       - uses: streetsidesoftware/cspell-action@v5
         with:
+          incremental_files_only: false
+          config: 'cspell.json'
           # eventually we intend to fail the build on spelling errors
           # so we restrict this to the docs folder
           root: './docs'
           # only warn for now
           inline: warning # error
           strict: false # true fails the build
-          config: 'cspell.json'