Syntex highlight error resolved (#817)

Jsx syntex highlight error resolved in Readme

Author: amjadnoor

README.md

@@ -11,12 +11,13 @@ Split-Pane React component, can be nested or split vertically or horizontally!
 
 ## Installing
 
-````sh
+```sh
 npm install react-split-pane
 
 # or if you use yarn
 
 yarn add react-split-pane
+```
 
 ## Example Usage
 
@@ -25,7 +26,7 @@ yarn add react-split-pane
   <div />
   <div />
 </SplitPane>
-````
+```
 
 ```jsx
 <SplitPane split="vertical" minSize={50}>