Adds response header descriptions (#1256)

adds response header descriptions

Author: ZPain8464

content/docs/reference/reference.json

@@ -666,13 +666,15 @@
     "id": "set-response-headers",
     "title": "Set Response Headers",
     "path": "/set-response-headers",
+    "description": "Set static HTTP Response Header values for all managed routes",
     "services": [],
     "type": "map of strings key value pairs"
   },
   "set-response-headers-route": {
     "id": "set-response-headers-route",
     "title": "Set Response Headers (Per Route)",
     "path": "/routes/headers#set-response-headers",
+    "description": "Set static HTTP Response Header values for a route",
     "services": [],
     "type": "map of strings key value pairs"
   },