deprecate ExtentHtmlReporter

Author: anshooarora

src/main/java/com/aventstack/extentreports/reporter/ExtentHtmlReporter.java

@@ -15,6 +15,7 @@
  * The ExtentSparkReporter creates a rich standalone spark file. It allows
  * several configuration options via the <code>config()</code> method.
  */
+@Deprecated
 public class ExtentHtmlReporter extends BasicFileReporter {
 
 	private static final Logger logger = Logger.getLogger(ExtentHtmlReporter.class.getName());