Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -1,10 +1,10 @@
 # Contribution Guidelines 
-Please note that this project is released with a [Contributor Code of Conduct](code-of-conduct.md). By participating in this project you agree to abide by its terms.
+Please note that this project is released with a [Contributor Code of Conduct](https://github.com/PanXProject/awesome-certificates/blob/main/code-of-conduct.md). By participating in this project you agree to abide by its terms.
 
 ## Adding courses/certificates
 To ensure this project keeps growing, we rely on community contributions. 
 <!-- markdown-link-check-disable -->
-If you'd like to add a free course with a certificate/badge to [awesome-certificates](https://github.com/Panxproject/awesome-certificates#readme):
+If you'd like to add a free course with a certificate/badge to [awesome-certificates](https://github.com/PanXProject/awesome-certificates#readme):
 - **First:** [fork this project](https://github.com/PanXProject/awesome-certificates/fork) and make the edits you need. 
 - **Second:** open a [pull request](https://github.com/PanXProject/awesome-certificates/compare), if you're new to pull requests read about it [here](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/creating-a-pull-request).
-- **Third:** read and adhere to the [list guidelines](pull_request_template.md).
+- **Third:** read and adhere to the [list guidelines](https://github.com/PanXProject/awesome-certificates/blob/main/pull_request_template.md).