docs(contributing): include a link to contribute to the ionicons site (ionic-team#1183)

Author: brandyscarney

.github/CONTRIBUTING.md

@@ -43,7 +43,7 @@ Please see our [Contributor Code of Conduct](./CODE_OF_CONDUCT.md) for informati
 #### Modifying Components
 
 1. Navigate to the `src/components/` directory and open the `icon` component to modify.
-2. Make any changes to the icon component and then [preview-changes](#preview-component-changes).
+2. Make any changes to the icon component and then [preview the changes](#preview-component-changes).
 
 
 #### Preview Component Changes
@@ -64,6 +64,10 @@ TODO -->
 3. Please fill out the Pull Request template to the best of your ability and include any issues that are related.
 
 
+## Updating Documentation
+
+The documentation site for Ionicons is located in the [ionicons-site](https://github.com/ionic-team/ionicons-site) repository.
+
 ## License
 
 By contributing your code to the ionic-team/ionicons GitHub Repository, you agree to license your contribution under the MIT license.