fix: switch to fern environment with FERN_TOKEN

Signed-off-by: Will Killian <wkillian@nvidia.com>

Author: willkill07

.github/workflows/publish-fern-docs.yml

@@ -16,6 +16,7 @@ jobs:
   publish:
     name: Publish
     runs-on: ubuntu-latest
+    environment: fern
     timeout-minutes: 20
     permissions:
       contents: read
@@ -37,5 +38,5 @@ jobs:
       - name: Publish docs
         working-directory: fern
         env:
-          FERN_TOKEN: ${{ secrets.DOCS_FERN_TOKEN }}
+          FERN_TOKEN: ${{ secrets.FERN_TOKEN }}
         run: fern generate --docs