docs - active header highlighting inconsistent
The highlighting of the active section across the top is inconsistent. When Plugin, CLI or API is selected, it's a darker grey

![](https://cl.ly/72c34dd8333d/Image%2525202019-09-03%252520at%2525202.37.32%252520pm.png)
With File Format and Sketch.app, it's not shown as highlighted.

![](https://cl.ly/e478a182d386/Image%2525202019-09-03%252520at%2525202.38.02%252520pm.png)