Update README.md

Former-commit-id: 1e84b21

Author: lifeparticle

README.md

@@ -16,7 +16,7 @@
   [![Reliability Rating](https://sonarcloud.io/api/project_badges/measure?project=lifeparticle_binarytree&metric=reliability_rating)](https://sonarcloud.io/summary/new_code?id=lifeparticle_binarytree)
   [![Duplicated Lines (%)](https://sonarcloud.io/api/project_badges/measure?project=lifeparticle_binarytree&metric=duplicated_lines_density)](https://sonarcloud.io/summary/new_code?id=lifeparticle_binarytree)
 
-<a href="[https://binarytree.dev/](https://github.com/lifeparticle/binarytree/blob/main/.github/dependabot.yml)" target="_blank">
+<a href="https://github.com/lifeparticle/binarytree/blob/main/.github/dependabot.yml" target="_blank">
   <img src="https://github.com/lifeparticle/binarytree/assets/1612112/75075fc7-8241-4375-905d-8d96cc239ffa" alt="binary tree logo" height="20" />
 </a>