Fix typo

Change-Id: I577cecc9b5c73a999b0e38478adf71c527210619
Reviewed-on: https://gerrit.libreoffice.org/73635
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>

forms/source/misc/InterfaceContainer.cxx

@@ -525,7 +525,7 @@ void SAL_CALL OInterfaceContainer::read( const Reference< XObjectInputStream >&
             catch(const WrongFormatException&)
             {
                 // the object could not be read
-                // create a object (so the readEvents below will assign the events to the right controls)
+                // create an object (so the readEvents below will assign the events to the right controls)
                 xObj = lcl_createPlaceHolder( m_xContext );
                 if ( !xObj.is() )
                     // couldn't handle it