Fix typos found by codespell (#650)

docs/advanced-usage.md

@@ -426,7 +426,7 @@ jobs:
       with:
         python-version: "3.8.0"
         cache: "poetry"
-    - run: echo '${{ steps.cp310.outputs.cache-hit }}' # true if cache-hit occured on the primary key
+    - run: echo '${{ steps.cp310.outputs.cache-hit }}' # true if cache-hit occurred on the primary key
 ```
 
 ## Environment variables