Update README.md

README.md

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 <h1 align="center">Easy Watermark</h1>
 
+<p align="center">  
+  <a href="https://github.com/rosuH/EasyWatermark/blob/master/README_zh-CN.md">简体中文</a>
+
+<p align="center">
+
 <p align="center">  
 Securely, easily add a watermark to your sensitive photos.</br>To prevent them from being leaked or exploited by the <b>BAD GUY</b>.
   </br>
@@ -75,4 +80,4 @@ We welcome your comments and suggestions in the issues section, or you can contr
 Of course, you can also contact the developer directly via telegram or email and we'll get back to you shortly.
 
 ## Privacy policy
-[Privacy policy](https://github.com/rosuH/EasyWatermark/blob/PrivacyPolicy.md)
+[Privacy policy](https://github.com/rosuH/EasyWatermark/blob/master/PrivacyPolicy.md)