subsurface typo fix

[Dirk Hohndel]

On Wed, Mar 23, 2016 at 07:57:35PM +0100, Werner Macho wrote:
> Hi!
> 
> I guess it would be easier to create a pull request somewhere but I
> could not find which repository is the official one to create a pull
> request on.
> http://git.subsurface-divelog.org/
> https://github.com/torvalds/subsurface

git://git.subsurface-divelog.org/subsurface

Is the official repo. But for most purposes patches are easy so unless I
ask people otherwise, I usually prefer patches.

> So here you are.. It's just a small typo but whenever I see such things
> I try to fix them - otherwise it will never be done ;)

Much appreciated!

/D