removed ismap and added not-writable parameters

client/fido/fido2.json

@@ -1,12 +1,10 @@
 {
   "ClientDataHash": "000102030405060708090a0b0c0d0e0f000102030405060708090a0b0c0d0e0f",
   "RelyingPartyEntity": {
-    "isMap": true,
     "id": "acme.com",
     "name": "Acme"
   },
   "UserEntity": {
-    "isMap": true,
     "id": "00000000000000000000000000000000",
     "icon": "https://pics.acme.com/00/p/aBjjjpqPb.png",
     "name": "johnpsmith@acme.com",
@@ -14,20 +12,17 @@
   },
   "pubKeyCredParams": [
     {
-      "isMap": true,
       "type": "public-key",
       "alg": -7,
-      "name": "ES256"
+      ".name": "ES256"
     },
     {
-      "isMap": true,
       "type": "public-key",
       "alg": -257,
-      "name": "RS256"
+      ".name": "RS256"
     }
   ],
   "options": {
-    "isMap": true,
     "up": false,
     "uv": false,
     "keyStorageDevice": true