offapi: fix animations::AnimationCalcMode documentation

XAnimate::KeyTimes was referred using wrong markup, but KeySplines is
not a property at all, it seems. Reading
AnimationsExporterImpl::exportAnimate() in xmloff, this is probably
meant to be XAnimate::TimeFilter.

Change-Id: I19fc86ce4a5fb28514d9be3fca5a53ad3fcfba51

offapi/com/sun/star/animations/AnimationCalcMode.idl

@@ -51,8 +51,8 @@ constants AnimationCalcMode
 
     /** Interpolates from one value in the values list to the next according to a
         time function defined by a cubic Bezier spline. The points of the spline are
-        defined in the #KeyTimes attribute, and the control points
-        for each interval are defined in the #KeySplines attribute.
+        defined in the XAnimate::KeyTimes attribute, and the control points
+        for each interval are defined in the XAnimate::TimeFilter attribute.
     */
     const short SPLINE = 3;
 };