docs(Breadcrumb): rework and clarify component examples

[layershifter]

Fixes #3477.

[codecov-io]

Codecov Report

Merging #3488 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3488   +/-   ##
=======================================
  Coverage   99.82%   99.82%           
=======================================
  Files         172      172           
  Lines        2802     2802           
=======================================
  Hits         2797     2797           
  Misses          5        5

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 5940fd8...8b7dec0. Read the comment docs.

[levithomason]

Released in [email protected].