remove leading tab

fix rendering
Merge pull request #3062 from jimt/patch-1

remove leading tab
FIX Docs for DataList::filter()

The docs incorrectly stated that DataList::filter() needed escaped input, but this isn't true as the ExactMatch filter (and others) escape the values for you.

Anyone following that advice would have double escaped arguments
Merge pull request #3073 from dhensby/patch-5

FIX Docs for DataList::filter()