better docs

deploy.yaml

@@ -69,6 +69,10 @@ spec:
         - containerPort: 8443
           name: webhook
         env:
+        - name: STS_ENDPOINT
+          value: "https://api.vultr.com/v2/assumed-roles/compatibility/aws/sts"
+        - name: SERVICE_ACCOUNT_AUDIENCE
+          value: "vultr" #TODO: Probably need to update with whatever is in the action map
         - name: TLS_CERT_PATH
           value: /etc/webhook/certs/tls.crt
         - name: TLS_KEY_PATH