docs: Update sop-class-handler md (#3217)

i don't know if it was intentional but should their be a closing square brackets for sopClassUids

platform/docs/docs/platform/extensions/modules/sop-class-handler.md

@@ -53,7 +53,7 @@ const sopClassDictionary = {
 const sopClassUids = [
   sopClassDictionary.CTImageStorage,
   sopClassDictionary.MRImageStorage,
-;
+];
 
 const makeDisplaySet = (instances) => {
   const instance = instances[0];