Replace links to real NHS pages within page templates to href="#"

[frankieroberto]

Having real links within the example page templates can be confusing, as it takes you away from the prototype with no way to navigate back except the back link.

We could replace all these with href="#" so that they still look like a link but don’t navigate you anywhere.

This would currently have to be done in both the documentation website and the prototype kit itself, as the templates are duplicated in both pages.

Spun out from #96 as reported by @vickytnz