Update README.md

Author: not-nef

docs/README.md

@@ -1,5 +1,7 @@
 <div align="center">
 
+![logo](https://raw.githubusercontent.com/not-nef/onyx/main/assets/logo.png)
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 # Onyx
 <a style="text-decoration:none" href="https://github.com/not-nef/txt2/releases">
     <img src="https://img.shields.io/github/v/release/not-nef/onyx?display_name=release&include_prereleases" alt="Releases" />