Use dynamic versioning

The doc compiler will automatically add & update the versions to the latest one.

site/docs/hosting/cloudflare-workers-deno.md

@@ -50,7 +50,7 @@ Create a new file named `bot.ts` and put the following contents in it:
 import {
   Bot,
   webhookCallback,
-} from "https://deno.land/x/grammy@v1.15.3/mod.ts";
+} from "https://deno.land/x/grammy/mod.ts";
 
 interface Environment {
   BOT_TOKEN: string;