Update bug tracker link in CONTRIBUTING.md

Author: qaisjp

CONTRIBUTING.md

@@ -1,7 +1,7 @@
 Our project's code repository can be found on the [multitheftauto/mtasa-blue](https://github.com/multitheftauto/mtasa-blue/) Git repository at [GitHub](https://github.com/). We are always looking for new developers, so if you're interested, here are some useful links:
 
 * [Nightly Builds](https://nightly.mtasa.com/)
-* [Bugtracker Roadmap](https://bugs.mtasa.com/roadmap_page.php)
+* [Issue Tracker](https://github.com/multitheftauto/mtasa-blue)
 * [Wiki Roadmap](https://wiki.mtasa.com/wiki/Roadmap)
 
 Before committing, please review the [coding guidelines](https://wiki.mtasa.com/index.php?title=Coding_guidelines).