Add displayName to Normalize component

[GreenTeaCake]

Initial checklist

• [x] I read the support docs
• [x] I read the contributing guide
• [x] I agree to follow the code of conduct
• [x] I searched issues and couldn’t find anything (or linked relevant results below)
• [x] If applicable, I’ve added docs and tests

Description of changes

React Developer Tool shows the name of the Normalize component as l2. The PR addresses the issue and assigns a human understandable value to the displayName property of the component. As a result we can clearly distinguish the component from other ones with striped out display names. So the debugging process is eased.

[sergeysova]

@GreenTeaCake Thank you! Good contribution.