Update single crystal section of release notes

docs/source/release/v5.0.0/diffraction.rst

@@ -82,7 +82,10 @@ Single Crystal Diffraction
 
 - Support added for DEMAND (HB3A) to the algorithms :ref:`ConvertWANDSCDtoQ <algm-ConvertWANDSCDtoQ-v1>` and :ref:`FindPeaksMD <algm-FindPeaksMD-v1>` in order to handle additional goniometers.
 - Fixed PredictSatellitePeaks producing an empty table when using cross-terms with crystallography convention for sign of Q.
-- IntegrateEllipsoids and IntegrateEllipsoidsTwoStep now calculate the count-weighted variance as required for non Event mode data. 
+- Two fixes to IntegrateEllipsoids and IntegrateEllipsoidsTwoStep. For non Event mode data the algorithms now:
+
+  - calculate the count-weighted variance as required.
+  - return the correct error on the integrated intensity.
 
 Miscellaneous
 ------------------