Merge pull request #21 from jerusdp/nightly

FIX: double quotes to single quotes

Author: jerusdp

.github/workflows/nightly.yml

@@ -16,7 +16,7 @@ jobs:
           TAG: nightly
   publish:
     needs: [test]
-    if: github.repository == "rust-serverless/lambda-rust"
+    if: github.repository == 'rust-serverless/lambda-rust'
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2