Change to ic-side-navigation 'Layout example'

[gd2910]

Summary of the bug

The IcSideNavigation layout example needs a style change on the

tag. Current: <main style={{height: '100vh'}}> Change to: <main style={{minHeight: '100vh'}}>

Base code, web-component and react code snippets will need to be updated.

🪜 How to reproduce

1. Go to page: 'layout example'
2. Shrink the window and scroll down
3. See that the IcTypography is overlapping the footer

🧐 Expected behaviour

Typography should not overlap footer