camcontrol.8: Descriptions before examples

[ziaee]

Summary

This page has a lot of examples, so having them in the previous order
can be confusing. Rewrite to the normal order where the descriptions
come before the command, followed by a colon, which is still clear even
jumping to the middle of the section.

MFC after: 3 days
PR: 291759

[imp]

I guess this is OK.... It's consistent.