convert/cvs: update debugcvsps documentation

hgext/convert/__init__.py

@@ -178,9 +178,10 b' def convert(ui, src, dest=None, revmapfi'
         add the most recent revision on the branch indicated in the
         regex as the second parent of the changeset.
 
-    The hgext/convert/cvsps wrapper script allows the builtin
+    An additional "debugcvsps" Mercurial command allows the builtin
     changeset merging code to be run without doing a conversion. Its
-    parameters and output are similar to that of cvsps 2.1.
+    parameters and output are similar to that of cvsps 2.1. Please see
+    the command help for more details.
 
     Subversion Source
     -----------------

tests/test-convert.out

@@ -153,9 +153,10 b' convert a foreign SCM repository to a Me'
         recent revision on the branch indicated in the regex as the second
         parent of the changeset.
 
-    The hgext/convert/cvsps wrapper script allows the builtin changeset
+    An additional "debugcvsps" Mercurial command allows the builtin changeset
     merging code to be run without doing a conversion. Its parameters and
-    output are similar to that of cvsps 2.1.
+    output are similar to that of cvsps 2.1. Please see the command help for
+    more details.
 
     Subversion Source
     -----------------