Bring comments into compliance with schema

Author: ppfeister

sherlock/resources/data.json

@@ -977,7 +977,7 @@
     "username_claimed": "naveennamani877"
   },
   "HackerNews": {
-    "::::README::::": "First errMsg invalid, second errMsg rate limited. Not ideal. Adjust for better rate limit filtering.",
+    "__comment__": "First errMsg invalid, second errMsg rate limited. Not ideal. Adjust for better rate limit filtering.",
     "errorMsg": [
       "No such user.",
       "Sorry."
@@ -2265,7 +2265,7 @@
     "username_claimed": "blue"
   },
   "YandexMusic": {
-    "::::README::::": "The first and third errorMsg relate to geo-restrictions and bot detection/captchas.",
+    "__comment__": "The first and third errorMsg relate to geo-restrictions and bot detection/captchas.",
     "errorMsg": [
       "\u041e\u0448\u0438\u0431\u043a\u0430 404",
       "<meta name=\"description\" content=\"\u041e\u0442\u043a\u0440\u044b\u0432\u0430\u0439\u0442\u0435 \u043d\u043e\u0432\u0443\u044e \u043c\u0443\u0437\u044b\u043a\u0443 \u043a\u0430\u0436\u0434\u044b\u0439 \u0434\u0435\u043d\u044c.",

sherlock/resources/data.schema.json

@@ -16,6 +16,10 @@
                 "isNSFW": { "type": "boolean" },
                 "headers": { "type": "object" },
                 "request_payload": { "type": "object" },
+                "__comment__": {
+                    "type": "string",
+                    "description": "Used to clarify important target information if (and only if) a commit message would not suffice.\nThis key should not be parsed anywhere within Sherlock.",
+                },
                 "tags": {
                     "oneOf": [
                         {