fix typo (#673)

Author: tclh123

README.md

@@ -90,7 +90,7 @@ A primary motivation for kube-router is performance. The combination of BGP for
 inter-node Pod networking and IPVS for load balanced proxy Services is a perfect
 recipe for high-performance cluster networking at scale. BGP ensures that the
 data path is dynamic and efficient, and IPVS provides in-kernel load balancing
-that has been thouroughly tested and optimized.
+that has been thoroughly tested and optimized.
 
 ## Getting Started
 
@@ -136,4 +136,4 @@ Testing and development by [ShopGun](https://shopgun.com/about)
 
 <p align="left">
   <img height="90" src="docs/img/shopgun_logo.png"> </image>
-</p>
+</p>