The ^ symbol matches word start. "^A" will match all lines that start with
a capital A. Fixed the wiki page.

> Hello,
> I just noticed that the regexp which is used to list a package
> tutorials is probably wrong.
> If you take a look at: camera_calibration/Tutorials
> (http://www.ros.org/wiki/camera_calibration/Tutorials)
> You see the visp_camera_calibration tutorial too.
>
> What is the best solution to fix this? (I guess the template page
> should be updated too.)
>
> Best,
> --
> Thomas Moulard
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