Update discussion link (#47)

Update discussion link to category

Author: sinsukehlab

.github/steps/X-finish.md

@@ -20,7 +20,7 @@ Here's a recap of all the tasks you've accomplished in your repository:
 
 - Learn more about GitHub Actions by reading "[Learn GitHub Actions](https://docs.github.com/actions/learn-github-actions)".
 - Use actions created by others in [awesome-actions](https://github.com/sdras/awesome-actions).
-- We'd love to hear what you thought of this course [in our discussion board](https://github.com/skills/.github/discussions).
+- We'd love to hear what you thought of this course [in our discussion board](https://github.com/orgs/skills/discussions/categories/hello-github-actions).
 - [Take another GitHub Skills course](https://github.com/skills).
 - Learn more about GitHub by reading the "[Get started](https://docs.github.com/get-started)" docs.
 - To find projects to contribute to, check out [GitHub Explore](https://github.com/explore).

README.md

@@ -68,7 +68,7 @@ In this course, you will:
 
 ---
 
-Get help: [Post in our discussion board](https://github.com/skills/.github/discussions) • [Review the GitHub status page](https://www.githubstatus.com/)
+Get help: [Post in our discussion board](https://github.com/orgs/skills/discussions/categories/hello-github-actions) • [Review the GitHub status page](https://www.githubstatus.com/)
 
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