Update README.md

Author: petrenkorf

README.md

@@ -2,7 +2,7 @@
 This repository contains LeetCode resources which are useful during interview preparation.
 
 ## Fundamental Concepts
-- [LinkedIn List](https://leetcode.com/discuss/study-guide/1800120/become-master-in-linked-list)
+- [Linked List](https://leetcode.com/discuss/study-guide/1800120/become-master-in-linked-list)
 - [Queues](https://medium.com/basecs/to-queue-or-not-to-queue-2653bcde5b04)
 - [Stacks](https://medium.com/basecs/stacks-and-overflows-dbcf7854dc67)
 - [Hash Tables](https://medium.com/basecs/taking-hash-tables-off-the-shelf-139cbf4752f0)