Update README.md

Author: pawanjenu

README.md

@@ -19,9 +19,6 @@ if User-1, activates his session in his device and at the same time you(User-2)
 How does this extension solve this issue?
 you get to choose the session(sub-account) you want to track your submissions, and this extension will make sure, its tracked inside your chosen session.
 
-# Installation guide:
-Please head over to: [Installation section](https://github.com/pawanjenu/LeetcodeSessionManager/wiki/Install-extension)
-
 # Usage:
 * Please make sure that you are logged in to leetcode.com before using the extension.
 * On the first run, no session is chosen, so please click on the the drop down and select the desired session.