diff --git a/.github/workflows/api_docs.yml b/.github/workflows/api_docs.yml
index 63cf24f6..ac01aa18 100644
--- a/.github/workflows/api_docs.yml
+++ b/.github/workflows/api_docs.yml
@@ -2,7 +2,7 @@ name: Build API Doc
 
 on:
   pull_request:
-    types: [opened, synchronize, reopened]
+    types: [ opened, synchronize, reopened ]
 
 jobs:
   build: