Update FindOnPage.md

Updated supress def dialog and should highlight

Author: maxwellmyers

FindOnPage.md

@@ -579,12 +579,22 @@ namespace Microsoft.Web.WebView2.Core
         /// Stops the current 'Find' operation and hides the Find bar.
         void StopFind();
 
-        /// Gets or sets the state of whether all matches are highlighted. Returns TRUE if all matches are highlighted, FALSE otherwise.
+        /// Gets or sets the state of whether all matches are highlighted. 
+        /// Returns TRUE if all matches are highlighted, FALSE otherwise.
+        /// Note: Changes to this property take effect only when StartFind, FindNext, or FindPrevious is called. 
+        /// Preferences for the session cannot be updated unless another call to the StartFind function on the server-side is made. 
+        /// Therefore, changes will not take effect until one of these functions is called.
         Boolean ShouldHighlightAllMatches { get; set; };
-
-        /// Set this property to hide the default Find UI. You can use this to hide the default UI so that you can show your own custom UI or programmatically interact with the Find API while showing no Find UI. Returns TRUE if hiding the default Find UI and FALSE if using showing the default Find UI.
+        
+        /// Sets this property to hide the default Find UI. 
+        /// You can use this to hide the default UI so that you can show your own custom UI or programmatically interact with the Find API while showing no Find UI. 
+        /// Returns TRUE if hiding the default Find UI and FALSE if using showing the default Find UI.
+        /// Note: Changes to this property take effect only when StartFind, FindNext, or FindPrevious is called. 
+        /// Preferences for the session cannot be updated unless another call to the StartFind function on the server-side is made. 
+        /// Therefore, changes will not take effect until one of these functions is called.
         Boolean SuppressDefaultFindDialog { get; set; };
 
+
         /// Retrieves the index of the currently active match in the find session. Returns the index of the currently active match, or -1 if there is no active match.
         Int32 ActiveMatchIndex { get; };