COMP: fix typo in dicomweb-client superbuild

From: Steve Pieper <pieper@isomics.com>

git-svn-id: http://svn.slicer.org/Slicer4/trunk@27958 3bd1e089-480b-0410-8dfb-8563597acbee

Author: pieper

SuperBuild/External_python-dicomweb-client.cmake

@@ -1,7 +1,7 @@
 set(proj python-dicomweb-client)
 
 # Set dependency list
-set(${proj}_DEPENDENCIES python python-setuptools python-requests pydicom)
+set(${proj}_DEPENDENCIES python python-setuptools python-requests python-pydicom)
 
 if(NOT DEFINED Slicer_USE_SYSTEM_${proj})
   set(Slicer_USE_SYSTEM_${proj} ${Slicer_USE_SYSTEM_python})