Participants aren't clear how to link from their prototype from the index page

[36degrees]

This issue was observed whilst facilitating Prototype Kit training in Manchester on 20 February 2020.

We saw a number of participants who were unclear how to do this, as they weren't sure where the link should go.

We might want to be more instructional about exactly where / how to add the link.

We could also consider making it a stretch task in a later step, when they may be more confident reading and changing HTML.

prototype-kit-training/source/task1/task1.md

Lines 18 to 22 in 5db3119

	### Link to your prototype from the index page
	If you go to `localhost:3000` you can see the default index page for the prototype kit.
	Change the page so that it clearly links to your Juggling service start page.