Updated Usage to include links to other sections (#1597)

Updated the 'Usage' section in documentation to include links to the sections mentioned there.

Author: vigneshrajj

docs/getting-started/usage.md

@@ -5,7 +5,7 @@ path: "/getting-started/usage"
 title: "Usage"
 ---
 This is a quick example of how to use our basic components, modifiers and presets to generate a good looking screen.  
-For detailed information please go over the other sections: Style, Modifiers, Components...
+For detailed information please go over the other sections: [Style](../foundation/style.md), [Modifiers](../foundation/modifiers.md), Components...
 
 ![basic showcase](basic-showcase.png).