Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -19,7 +19,7 @@ pages:
         mike set-default --deploy-prefix public -r $HTTPS_REMOTE -p -b $PAGES_BRANCH latest
       elif [ "$CI_COMMIT_REF_NAME" == "develop" ]; then
         mike deploy --deploy-prefix public -r $HTTPS_REMOTE -p -b $PAGES_BRANCH -u $CI_COMMIT_BRANCH
-      elif [ -n "$CI_CLEAN"]; then
+      elif [ -n "$CI_CLEAN" ]; then
         rm -rf public/$CI_CLEAN
       fi