WPF-956968-Updated the WPF KB sample and readme file#3

Priyadharshini-Sf4862 wants to merge 4 commits intomasterSyncfusionExamples/How-to-customize-the-appearance-of-axis-labels-in-WPF-Chart:masterfrom

WPF-956968-ChartKBImprovement-SyncfusionExamples/How-to-customize-the-appearance-of-axis-labels-in-WPF-Chart:WPF-956968-ChartKBImprovement-Copy head branch name to clipboard