docs: fix S3 key reference in example

Author: Christopher Drew

README.md

@@ -26,7 +26,7 @@ jobs:
         env:
           LAMBDA_NAME: example-lambda-function
           AWS_S3_BUCKET: example-lambda-builds-bucket
-          AWS_S3_KEY: /builds/example-lambda.v1.0.0.zip
+          AWS_S3_KEY: builds/example-lambda.v1.0.0.zip
           AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
           AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
           AWS_REGION: ${{ secrets.AWS_REGION }}