graphics/gimp: correct pkg-plist

[FUJISHIMA Satsuki]

"make package WITH_PYTHON=yes" found this for me.

Index: pkg-plist
===================================================================
RCS file: /home/pcvs/ports/graphics/gimp/pkg-plist,v
retrieving revision 1.94
diff -u -r1.94 pkg-plist
--- pkg-plist	26 Dec 2004 15:58:26 -0000	1.94
+++ pkg-plist	28 Dec 2004 11:51:08 -0000
@@ -204,7 +204,7 @@
 %%PYTHON:%%libexec/gimp/2.2/plug-ins/clothify.py
 libexec/gimp/2.2/plug-ins/color_enhance
 libexec/gimp/2.2/plug-ins/colorify
-%%PYTHON:%%libexec/gimp/2.2/plug-ins/colorhtml.py
+%%PYTHON:%%libexec/gimp/2.2/plug-ins/colorxhtml.py
 libexec/gimp/2.2/plug-ins/colortoalpha
 libexec/gimp/2.2/plug-ins/compose
 libexec/gimp/2.2/plug-ins/compressor