chore: update references to ohif-core and react-viewerbase

docs/latest/essentials/themeing.md

@@ -4,7 +4,7 @@ Themeing is currently accomplished with color variables that are defined within
 the [`:root`](https://css-tricks.com/almanac/selectors/r/root/) selector
 (allowing them to cascade across all elements). This repository's components,
 and the ones we consume from our
-[React Viewerbase component library](https://react.ohif.org/styling-and-theming)
+[`@ohif/ui` component library](https://react.ohif.org/styling-and-theming)
 utilize them. We are interested in pursuing more robust themeing options, and
 open to pull requests and discussion issues.
 
@@ -80,12 +80,12 @@ function RadicalImagingLogo() {
       href: 'http://radicalimaging.com',
     },
     React.createElement('h5', {}, 'RADICAL IMAGING')
-  )
+  );
 }
 
 props.whiteLabelling = {
   logoComponent: RadicalImagingLogo(),
-}
+};
 ```
 
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