GitHub actions: fix deploy workflow

Author: t-lo

.github/workflows/gh-pages.yml

@@ -8,7 +8,7 @@ on:
 
 jobs:
   deploy:
-    if: github.repository == 'uapi-group/docs'
+    if: github.repository == 'uapi-group/conferences'
     runs-on: ubuntu-22.04
     concurrency:
       group: ${{ github.workflow }}-${{ github.ref }}