Updated cache sizes documentation
Updated cache sizes documentation

The cache sizes were modified in #change,24321 but the documetation
was updated.

Change-Id: I1c9213bb29a374a9c7592133262d3fee28d8a7e3
Reviewed-by: Alex Wilson <75fe28a89a52dd8f665f8aed10f0a66d41b4f1d0@nokia.com>

amccarthy/qtlocation,kobolabs/qtlocation,amccarthy/qtlocation,kobolabs/qtlocation,amccarthy/qtlocation,kobolabs/qtlocation