Update README.md

Author: techslides

README.md

@@ -26,7 +26,7 @@ data["color"]._labelsdata //returns [1, 1, 2, 4, 2]
 data["color"]._data["red"] //returns 4
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-[JSFiddle](https://jsfiddle.net/3h3kuoz2/ "Drawing a pie chart with fastpivot and ChartJS")
+[JSFiddle](https://jsfiddle.net/eezgfjoj/ "Drawing a pie chart with fastpivot and ChartJS")