docs: update README

Author: SWHL

README.md

@@ -1,11 +1,11 @@
 <div align="center">
   <picture>
-    <source media="(prefers-color-scheme: dark)" srcset="https://github.com/RapidAI/RapidOCRWeb/releases/download/v0.0.0/RapidOCR_Web_LOGO_white_font.png"  width="55%" height="55%">
-    <source media="(prefers-color-scheme: light)" srcset="https://github.com/RapidAI/RapidOCRWeb/releases/download/v0.0.0/RapidOCRWeb_LOGO.png"  width="55%" height="55%">
+    <source media="(prefers-color-scheme: dark)" srcset="https://github.com/RapidAI/RapidOCRWeb/releases/download/v0.0.0/RapidOCR_Web_LOGO_white_font.png"  width="40%">
+    <source media="(prefers-color-scheme: light)" srcset="https://github.com/RapidAI/RapidOCRWeb/releases/download/v0.0.0/RapidOCRWeb_LOGO.png"  width="40%">
     <img alt="Shows an illustrated sun in light mode and a moon with stars in dark mode." src="https://github.com/RapidAI/RapidOCRWeb/releases/download/v0.0.0/RapidOCRWeb_LOGO.png">
   </picture>
 
- <br/>
+  <br/>
   <a href=""><img src="https://img.shields.io/badge/Python->=3.6-aff.svg"></a>
   <a href=""><img src="https://img.shields.io/badge/OS-Linux%2C%20Win%2C%20Mac-pink.svg"></a>
   <a href="https://pepy.tech/project/rapidocr_web"><img src="https://static.pepy.tech/personalized-badge/rapidocr_web?period=total&units=abbreviation&left_color=grey&right_color=blue&left_text=Downloads"></a>