Update about-projects.md

[petroselo]

Change the sentence from "two different layout options" to "three different layout options" because there are now tables, kanban boards and timeline-style roadmaps.

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Source	Review	Production	What Changed
issues/planning-and-tracking-with-projects/learning-about-projects/about-projects.md	fpt ghec ghes@ 3.15 3.14 3.13 3.12 3.11	fpt ghec ghes@ 3.15 3.14 3.13 3.12 3.11

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[guntrip]

Hey @petroselo, thanks for spotting this and submitting the correction. You're absolutely correct that this should be "three" ✨

I'll get this merged! Thank you again!

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