updated bat tldr

Author: johnalanwoods

README.md

@@ -168,7 +168,7 @@
   </h1>
   <p align="center">A community effort to simplify <code>man</code> pages with practical examples.</p>
   <p align="center">
-    <img src="https://raw.githubusercontent.com/tldr-pages/tldr/master/images/tldr.svg" width="600" />
+    <img src="https://raw.githubusercontent.com/tldr-pages/tldr/main/images/tldr-dark.png" width="600" />
   </p>
 </p>