[doc] Fixed tiny typo

[sslavic]

No description provided.

[jerseyrobot]

Can one of the admins verify this patch?

[AdamLindenthal]

Hi Stevo,
thanks for fixing that - seems like you see some docs issues, typos, etc. from time to time. We really appreciate the effort that makes our docs better. However, I would like to ask you if you could aggregate those things into some bigger batch containing at least a few of such small fixes in order to make it more efficient.
Also if you report a whole bunch of typos and similar problem, than it is worth to open some general JIRA issue linked with the PR. This should actually be done for every PR, but in case of one typo it really does not seem to make much sense...

That being said, we find it very useful, that someone reports the doc issues, we often do read what should be there instead of what really is.

Thanks,
Adam