Update inline comment doc on sidebar.js

[rogermparent]

Adds the new "style" and "icon" props to the example comment at the top of sidebar.js

Addresses comment from @jorgeorpinel here

[calibre-analytics]

Comparing Update inline comment doc on sidebar.js Snapshot #3 to median since last deploy of DVC.org.

	Performance	FCP?	TTI?
Overall Median across all pages and test profiles	94 no change	950ms  from 1.1s	3.7s no change
Chrome Desktop Chrome • Cable	100 no change	530ms  from 540ms	1.6s  from 1.7s
MotoG4, 3G connection Motorola Moto G4 • Regular 3G	89  from 80	1.6s no change	4.9s  from 6.3s

3 pages tested

 Home

Browser previews

Chrome Desktop	MotoG4, 3G connection

Most significant changes

	Value	Budget
Lighthouse Performance Score MotoG4, 3G connection	89  from 74

 Docs

Browser previews

Chrome Desktop	MotoG4, 3G connection

Most significant changes

No significant changes recorded.

 Blog

Browser previews

Chrome Desktop	MotoG4, 3G connection

Most significant changes

No significant changes recorded.

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[jorgeorpinel]

Haha I thought this would be a larger update. Thanks anyway 🙂