ci: fix condition

Author: ctron

.github/workflows/release.yaml

@@ -234,15 +234,15 @@ jobs:
     needs:
       - init
       - publish
-    if: needs.init.outputs.prerelease == 'false'
+    if: needs.init.outputs.prerelease != 'true'
     uses: ./.github/workflows/pages.yaml
 
   brew:
     needs:
       - init
       - publish
     runs-on: ubuntu-latest
-    if: needs.init.outputs.prerelease == 'false'
+    if: needs.init.outputs.prerelease != 'true'
 
     steps:
       - uses: ./.github/workflows/brew.yaml