chore: Update docs.

Author: goloroden

README.md

@@ -7,6 +7,7 @@ codingcircle contains the examples from the YouTube Coding Cirle.
 So far, the following exercises have been covered:
 
 - [Autocomplete](./autocomplete/) – implement an autocomplete feature using a trie
+- [Continous maximum](./continuousmax/) – calculate the maximum of a sliding window
 - [Remove k-th last element](./removekthlastelement/) – remove the k-th last element from a single-linked list
 - [Running median](./runningmedian/) – calculate the running median of a sequence of numbers