docs: minor fixes

Author: New-dev0

docs/.gitignore

@@ -7,6 +7,7 @@
 # Generated files
 .docusaurus
 .cache-loader
+/.yarn
 
 # Misc
 .DS_Store

docs/examples/echo-bot.md

@@ -161,7 +161,7 @@ async def onCallback(ctx: BotContext[CallbackQueryEvent]):
             <div className={styles.buttons}>
               <Link
                 className="button button--primary button--lg"
-                to="/docs/intro">
+                to="/docs/intro.md">
                 Explore Docs
               </Link>
               <Link