Update README.md

Author: hooshyar

README.md

@@ -22,7 +22,7 @@ Make sure your WordPress version is greater or equal to 4.7
 Clone repository
 git clone https://github.com/hooshyar/Flutter-Wordpress-Client.git
 
-and open pubspec.yaml
+and open <code>pubspec.yaml</code>
 
 run 
 <code>flutter packages get</code>