Fix this sentence a bit.

Change-Id: I113f5cf5a177f6315338f54c7e0ebeb19155b8e3

sc/source/core/tool/reffind.cxx

@@ -26,7 +26,7 @@
 
 namespace {
 
-//  include colon -> duplicate referenced are handled individual
+// Include colon; addresses in range reference are handled individually.
 const sal_Unicode pDelimiters[] = {
     '=','(',')','+','-','*','/','^','&',' ','{','}','<','>',':', 0
 };