Add instructions to install ninja-build (#2723)
Add instructions to install ninja-build (#2723)

* Add instructions to install ninja-build

* Restyled by prettier-markdown

Co-authored-by: Restyled.io <eb8d3fd3977bb570908ffc25e24391520747defb@restyled.io>
project-chip/connectedhomeip,nestlabs/connectedhomeip,nestlabs/connectedhomeip,nestlabs/connectedhomeip,nestlabs/connectedhomeip,project-chip/connectedhomeip,nestlabs/connectedhomeip,nestlabs/connectedhomeip,project-chip/connectedhomeip,project-chip/connectedhomeip,project-chip/connectedhomeip,nestlabs/connectedhomeip,project-chip/connectedhomeip