Update README.md (#22)

Fixed a typo in the URL to Start This Course

Author: jcwrimmer

README.md

@@ -30,7 +30,7 @@ Write your own GitHub JavaScript Action and automate customized tasks unique to
 ## How to start this course
 
 1. Right-click **Start course** and open the link in a new tab.
-   <br />[![start-course](https://user-images.githubusercontent.com/1221423/218596841-0645fe1a-4aaf-4f51-9ab3-8aa2d3fdd487.svg)](https://github.com/skills/writing-javacript-actions/generate)
+   <br />[![start-course](https://user-images.githubusercontent.com/1221423/218596841-0645fe1a-4aaf-4f51-9ab3-8aa2d3fdd487.svg)](https://github.com/skills/writing-javascript-actions/generate)
 2. In the new tab, follow the prompts to create a new repository.
    - For owner, choose your personal account or an organization to host the repository.
    - We recommend creating a public repository—private repositories will [use Actions minutes](https://docs.github.com/en/billing/managing-billing-for-github-actions/about-billing-for-github-actions).