Fix mobile preview captions

Author: vipmax

README.md

@@ -4,14 +4,18 @@
 
 ![editor](anycode/imgs/screen.png)
 
-## Mobile ACP
-
-ACP panel on phone:
+## Mobile Previews
 
 <table>
   <tr>
-    <td><img src="anycode/imgs/screen_phone.png" alt="ACP on mobile" width="240" /></td>
-    <td><img src="anycode/imgs/screen_phone2.PNG" alt="ACP on mobile 2" width="240" /></td>
+    <td align="center">
+      <img src="anycode/imgs/screen_phone.png" alt="ACP panel on phone" width="240" /><br/>
+      ACP panel on phone
+    </td>
+    <td align="center">
+      <img src="anycode/imgs/screen_phone2.PNG" alt="README on phone" width="240" /><br/>
+      README on phone
+    </td>
   </tr>
 </table>