Fixed typo i script

Author: martin-lindstrom

.github/workflows/build.yml

@@ -63,7 +63,7 @@ jobs:
         if: success()
         uses: crazy-max/ghaction-github-pages@v2
         with:
-	  domain: www.oidc.se
+          domain: www.oidc.se
           target_branch: gh-pages
           build_dir: html
           keep_history: true