Updated Git PR number.

CHANGELOG.rst

@@ -23,7 +23,7 @@ number of the code change for that issue.  These PRs can be viewed at:
 - Added the modest and smaller sized segments (segments < kernel size) to
   the list of segments to be deblended.  These segments were inadvertently
   left off the deblending list when the code was updated to handle enormously
-  large segments. [#]
+  large segments. [#1801]
 
 - Exclude single filter images from the generation of the total detection
   image to minimize cosmic ray contamination, unless there are only single