[TIME-20] Fix typo in time sheet report header

[Andriy Zhdanov]

Currently the header contains:
Report displaying a user wokred time sheet over a specified period.

Instead of "wokred" should be "worked".

Trivial thing

By elmadir/Wojciech Seliga on Fri, 2 Feb 2007 04:28:20 -0800

[Andriy Zhdanov]

Fixed for version 1.6 and 1.5

By azhdanov on Sat, 17 Feb 2007 15:44:46 -0800