Update content of files

data/web/corefork.telegram.org/constructor/messageActionBotAllowed.html

@@ -74,17 +74,17 @@
 <tr>
 <td><strong>attach_menu</strong></td>
 <td style="text-align: center;"><a href="/mtproto/TL-combinators#conditional-fields">flags</a>.1?<a href="/constructor/true">true</a></td>
-<td> </td>
+<td>We just installed the bot's <a href="/api/bots/attach">attachment menu</a>, thus giving the bot permission to send us messages.</td>
 </tr>
 <tr>
 <td><strong>domain</strong></td>
 <td style="text-align: center;"><a href="/mtproto/TL-combinators#conditional-fields">flags</a>.0?<a href="/type/string">string</a></td>
-<td>The domain name of the website on which the user has logged in. <a href="/widgets/login">More about Telegram Login »</a></td>
+<td>The user has logged in via <a href="/widgets/login">Telegram Login »</a>; this field contains the domain name of the website on which the user has logged in.</td>
 </tr>
 <tr>
 <td><strong>app</strong></td>
 <td style="text-align: center;"><a href="/mtproto/TL-combinators#conditional-fields">flags</a>.2?<a href="/type/BotApp">BotApp</a></td>
-<td> </td>
+<td>We just gave the specified <a href="/api/bots/webapps">bot web app</a> permission to send us messages.</td>
 </tr>
 </tbody>
 </table>

data/web/corefork.telegram.org/constructor/replyKeyboardMarkup.html

@@ -89,7 +89,7 @@
 <tr>
 <td><strong>persistent</strong></td>
 <td style="text-align: center;"><a href="/mtproto/TL-combinators#conditional-fields">flags</a>.4?<a href="/constructor/true">true</a></td>
-<td> </td>
+<td>Requests clients to always show the keyboard when the regular keyboard is hidden.</td>
 </tr>
 <tr>
 <td><strong>rows</strong></td>