fix(ci): fix spelling in API reference workflow

Replaced '--chached' with '--cached' and replaced '--quit' with
'--quiet'.

.gitea/workflows/generate-api-reference.yml

@@ -48,7 +48,7 @@ jobs:
 
           git add docs/reference
 
-          if git diff --chached --quit; then
+          if git diff --cached --quiet; then
             echo "No changes"
             exit 0
           fi