docs: fix layout

Author: Nodonisko

README.md

@@ -1,11 +1,11 @@
 # React Native Performance Toolkit
 
-<table>
-<tr>
-<td width="65%" valign="top">
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 Low overhead monitoring of important performance metrics for React Native apps like JS FPS, UI FPS, CPU usage, and memory usage.
 
+<p align="center">
+  <img src="media/app_screenshot.png" alt="Performance Toolkit Demo" width="30%" />
+</p>
+
 ## Installation
 
 ```bash
@@ -17,13 +17,6 @@ bun add react-native-performance-toolkit react-native-nitro-modules
 - React Native v0.76.0 or higher
 - Reanimated v4 or higher
 
-</td>
-<td width="35%">
-<img src="media/app_screenshot.png" alt="Performance Toolkit Demo" width="100%" />
-</td>
-</tr>
-</table>
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 ## Usage
 
 ### Very simple usage - get value once