Fix broken link (#549)

* fix link to example cookbook config file

* fix link formatting

Author: kafitzgerald

portal/cookbook-guide.md

@@ -61,7 +61,7 @@ For many concepts, we encourage writing self-contained functions to generate sim
 <img width="901" alt="Screenshot 2023-01-13 at 3 12 47 PM" src="https://user-images.githubusercontent.com/26660300/212428991-cd0ae2f0-73ca-40d8-b983-f122359463aa.png">
 
 ```{note}
-In the rest of this guide, we assume that you are familiar with the basics of using git and GitHub. If not, we strongly recommend reading through our [GitHub tutorials in Foundations](https://foundations.projectpythia.org/foundations/getting-started-github.
+In the rest of this guide, we assume that you are familiar with the basics of using git and GitHub. If not, we strongly recommend reading through our [GitHub tutorials in Foundations](https://foundations.projectpythia.org/foundations/getting-started-github).
 ```
 
 Your cookbook is now ready to have content added!
@@ -96,7 +96,7 @@ Required changes to your `myst.yml` file are all under the `project` section. Up
 - `toc` (table of contents)
 - `Jupyter -> Binder -> Repo`
 
-Take a look at the [`radar-cookbook/myst.yml`](https://github.com/ProjectPythia/radar-cookbook/blob/main/_toc.yml) for example syntax.
+Take a look at the [`radar-cookbook/myst.yml`](https://github.com/ProjectPythia/radar-cookbook/blob/main/myst.yml) for example syntax.
 
 ### 3. Customize Your Home Page