Revert YouTube link change in plugin.xml

Author: wuseal

src/main/resources/META-INF/plugin.xml

@@ -41,7 +41,7 @@
       <em>Kotlinx<em>
 
       <br></br>
-     <a href="https://www.youtube.com/watch?v=1Qmo-CY_OdE&t=68s">Video Tutorial</a> | <a href="https://github.com/wuseal/JsonToKotlinClass"> Full Usage Documentation</a></br>
+     <a href="https://github.com/wuseal/JsonToKotlinClass"> Full Usage Documentation</a></br>
 
     ]]></description>