⚡ replace GIF with those from the wiki

Author: masan4444

README.md

@@ -3,7 +3,7 @@
 :zap: PHP version manager written in rust
 
 <div align="center">
-  <img src="./docs/phpup.gif" alt="Blazing fast!">
+  <img src="https://raw.githubusercontent.com/wiki/masan4444/phpup/blob/phpup.gif" alt="Blazing fast!">
 </div>
 
 ## Features