rewrite other references to spotify/backstage and sorrounding things

microsite/blog/2020-09-30-backstage-design-system.md

@@ -70,7 +70,7 @@ To keep up with our latest design guidelines, go to [Designing for Backstage](ht
 
 ### [GitHub](https://github.com/backstage/backstage)
 
-Join in on the action [at spotify/backstage on GitHub](https://github.com/backstage/backstage) by submitting issues and opening pull requests for all things related to components and patterns in Backstage.
+Join in on the action [at backstage/backstage on GitHub](https://github.com/backstage/backstage) by submitting issues and opening pull requests for all things related to components and patterns in Backstage.
 
 ![img](assets/backstage-discord-DS.png)
 

microsite/core/Footer.js

@@ -59,7 +59,7 @@ class Footer extends React.Component {
               className="github-button"
               href={this.props.config.repoUrl}
               data-icon="octicon-star"
-              data-count-href="/spotify/backstage/stargazers"
+              data-count-href="/backstage/backstage/stargazers"
               data-show-count="true"
               data-count-aria-label="# stargazers on GitHub"
               aria-label="Star this project on GitHub"