open asc file in browser

firebase.json

@@ -80,6 +80,13 @@
           "value" : "max-age=2628000"
         }]
       },
+      {
+        "source" : "**/*.asc",
+        "headers" : [{
+          "key" : "Content-Type",
+          "value" : "text/plain"
+        }]
+      },
       {
         "source" : "404.html",
         "headers" : [{