update readme logo

Author: Taymindis

README.md

@@ -1,4 +1,6 @@
+<p align="center">
 ![nginx link function Logo](nginx-link-function-logo.png)
+</p>
 <h1 align="center">nginx-link-function</h1>
 <h3 align="center">The Application dynamic linking with Nginx </h3>