update fern definition

Author: davidkonigsberg

fern/apis/fai/generators.yml

@@ -1,16 +1,16 @@
+default-group: local
+
 api:
   specs:
-    - openapi: ./openapi.json
-default-group: local
+    - openapi: openapi.json
 
 groups:
   local:
     generators:
       - name: fernapi/fern-typescript-node-sdk
-        version: 2.0.0
+        version: 2.8.4
         output:
-          location: npm
-          url: npm.buildwithfern.com
-          package-name: "@fern-api/fai-sdk"
-        github:
-          repository: fern-api/fai-sdk
+          location: local-file-system
+          path: ../../../packages/fai-sdk/src
+        config:
+          namespaceExport: FernAI

fern/apis/fai/openapi.json

@@ -689,7 +689,7 @@
           }
         },
         "x-fern-audiences": [
-          "customers"
+          "customer"
         ],
         "security": [
           {