template fix

exposures/configs/nginx-config.yaml

@@ -3,13 +3,14 @@ id: nginx-config
 info:
   name: Nginx Config - Detect
   author: sheikhrishad,geeknik
+  severity: info
   description: Nginx configuration information was detected.
-  reference: https://nginx.org/en/  
+  reference: 
+    - https://nginx.org/en/  
   classification:
     cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
     cvss-score: 0.0
     cwe-id: CWE-200
-  severity: info
   tags: config,exposure,nginx
 
 requests: