Added PR Link

Author: blakedewey

CHANGES

@@ -3,6 +3,7 @@ Next release
 
 * ENH: Updated N4BiasCorrection input spec to include weight image and spline order. Made 
 	   argument formatting consistent. Cleaned ants.segmentation according to PEP8.
+	   (https://github.com/nipy/nipype/pull/990/files)
 * ENH: SPM12 Normalize interface (https://github.com/nipy/nipype/pull/986)
 * FIX: Utility interface test dir (https://github.com/nipy/nipype/pull/986)
 * FIX: IPython engine directory reset after crash (https://github.com/nipy/nipype/pull/987)