Mention default value.

Author: OrKoN

index.bs

@@ -1450,7 +1450,7 @@ with parameter |value| is:
 Capability: <dfn export>intercept file dialogs</dfn>
 Key: "<code>interceptFileDialogs</code>"
 Value type: boolean
-Description: Defines whether the file dialogs should be intercepted and not shown on screen.
+Description: Defines whether the file dialogs should be intercepted and not shown on screen. Defaults to false.
 </pre>
 
 <div algorithm="interceptFileDialogs capability deserialization algorithm">