Rename caching step

.github/workflows/test_and_deploy.yml

@@ -40,7 +40,7 @@ jobs:
           python-version: "3.9"
 
     steps:
-      - name: Cache atlases
+      - name: Cache brainglobe directory
         uses: actions/cache@v3
         with:
           path: | # ensure we don't cache any interrupted atlas download and extraction, if e.g. we cancel the workflow manually