showSingleLegend typo in documentation

[ggywebtech]

Hi,
I have been having a few issues with this and found that there is a typo in the doc.
https://github.com/FVANCOP/ChartNew.js/wiki/100_090_Legend#showsinglelegend

Sample: showSingleValue : true
should be
Sample: showSingleLegend : true

Regards

[Francois Vancoppenolle]

Fixed ! Thanks for reporting.