Fix GH Pages deploy

Author: stefanv

.github/workflows/gh-pages.yml

@@ -47,7 +47,7 @@ jobs:
           DART_SASS_URL: "https://github.com/sass/dart-sass/releases/download/"
         run: |
           export DART_SASS_TARBALL="dart-sass-${DART_SASS_VERSION}-linux-x64.tar.gz" && \
-          curl -LJO ${env.DART_SASS_URL}/${DART_SASS_VERSION}/${DART_SASS_TARBALL} && \
+          curl -LJO ${DART_SASS_URL}/${DART_SASS_VERSION}/${DART_SASS_TARBALL} && \
           tar -xf ${DART_SASS_TARBALL} && \
           rm ${DART_SASS_TARBALL}
           export PATH=$(pwd)/dart-sass:$PATH