[Docs—Fixes #15882]Use an ID as the example for Scrollspy
[Docs—Fixes #15882]Use an ID as the example for Scrollspy

Fixes #15882 — Use an ID as the example for Scrollspy so that it is more clear that this is for use with a single nav.
ammula88/bootstrap,ammula88/bootstrap,ammula88/bootstrap,ammula88/bootstrap