Update readme.txt

Author: vytisbulkevicius

readme.txt

@@ -20,7 +20,7 @@ The plugin leverages the Google Visualization API, DataTables.net, and ChartJS l
 
 - Want to see Visualizer in action before installing? <a href="https://demo.themeisle.com/visualizer/">View Visualizer Demo</a> [You can also try <b>Live Preview</b> button above]
 - Need any help with setup? <a href="https://docs.themeisle.com/collection/1560-visualizer-charts-and-graphs">Check Documentation</a>
-- Don’t like reading? <a href="https://youtube.com/playlist?list=PLmRasCVwuvpT0Gu1myGW-Dyt2oh-BPuci&si=S3o4BIyo3AYNh95w">Check Youtube Playlist</a>
+- Don’t like reading? <a href="https://youtube.com/playlist?list=PLmRasCVwuvpT0Gu1myGW-Dyt2oh-BPuci&si=S3o4BIyo3AYNh95w">Check YouTube Playlist</a>
 - Interested in Visualizer Pro? <a href="https://themeisle.com/plugins/visualizer-charts-and-graphs/upgrade/?utm_source=wpadmin&utm_medium=readme&utm_campaign=pro-cta">Know more about Visualizer PRO</a>
 
 ### Why You’ll Love Visualizer ###