Update generators.yml

Author: fern-support

fern/apis/api/generators.yml

@@ -86,7 +86,7 @@ groups:
         output:
           location: nuget
           package-name: Vapi.Net
-          api-key: ${NUGET_TOKEN}
+          api-key: ${NUGET_API_KEY}
         config:
           namespace: Vapi.Net
           client-class-name: VapiClient