docs: update Telegram Chat Surface Adapter and OAuth documentation with detailed bot setup instructions

Author: NoOne7135

adminforth/documentation/docs/tutorial/05-Adapters/09-chat-surface-adapters.md

@@ -16,7 +16,14 @@ pnpm i @adminforth/chat-surface-adapter-telegram
 pnpm i @adminforth/oauth-adapter-telegram
 ```
 
-Create a Telegram bot with BotFather and add the token to `.env`:
+Create a Telegram bot with BotFather and copy the token:
+
+1. Open [BotFather](https://t.me/BotFather).
+2. Click **Open** and open it in the Telegram app.
+3. Select or Create your bot.
+4. Copy the bot token shown at the top.
+
+Add the token to `.env`:
 
 ```env title=".env"
 TELEGRAM_BOT_TOKEN=your_bot_token

adminforth/documentation/docs/tutorial/08-Plugins/11-oauth.md

@@ -311,6 +311,16 @@ Install Adapter:
 pnpm install @adminforth/oauth-adapter-telegram --save
 ```
 
+Create Telegram OpenID Connect credentials in BotFather:
+
+1. Open [BotFather](https://t.me/BotFather).
+2. Click **Open** and open it in the Telegram app.
+3. Select or Create your bot.
+4. Open **Login Widget**.
+5. Click **Switch to OpenID Connect Login**.
+6. Copy the client ID and client secret shown at the top.
+7. Set **Redirect URI** to `https://example.com/oauth/callback`.
+
 Add the credentials to your `.env` file:
 
 ```bash