fix: fix build.yml

.github/workflows/build.yml

@@ -1,7 +1,7 @@
 name: Build m2os
 on:
   schedule:
-    - cron: ("41 6 * * 2") # 6:41 UTC every Tuesday
+    - cron: "41 6 * * 2" # 6:41 UTC every Tuesday
   push:
     branches:
       - main