984373: Added the UG documentation for the annotation events

Author: Tamilselvan-Durairaj

Document-Processing-toc.html

@@ -527,6 +527,7 @@
 									<li><a href="/document-processing/pdf/pdf-viewer/blazor/annotation/comments">Comments</a></li>
 									<li><a href="/document-processing/pdf/pdf-viewer/blazor/annotation/import-export-annotation">Import and Export Annotations</a></li>
 									<li><a href="/document-processing/pdf/pdf-viewer/blazor/annotation/annotations-in-mobile-view">Annotations in Mobile View</a></li>
+									<li><a href="/document-processing/pdf/pdf-viewer/blazor/annotation/events">Events</a></li>
 								</ul>
 							</li>
 							<li>Form Designer