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

BS3 commits: be164f4d1a8703144cfed588ed53d7ec432149e4

2947721120/googlebt4,ztx1491/todc-bootstrap,2947721120/todc-bootstrap,todc/todc-bootstrap,mozillo/todc-bootstrap,todc/todc-bootstrap,aaroncnhk/todc-bootstrap,up2vs/todc-bootstrap,todc/todc-bootstrap