Update DList.ts (#737)

According to the documentation it is a put request not a post request to update server count and it was not pushing server counts with the post requests. https://api.discordlist.gg/developers#/paths/~1bots~1%7Bid%7D~1guilds/put

Author: BradGamez

src/Interface/Lists/DList.ts

@@ -39,7 +39,7 @@ export default class DList extends Service {
   static post(options: ServicePostOptions) {
     const { token, clientID, serverCount } = options
     return super._post({
-      method: 'post',
+      method: 'put',
       url: `/bots/${Util.resolveID(clientID)}/guilds`,
       headers: { Authorization: `Bearer ${token}` },
       params: {