convert: help string cleanups

hgext/convert/__init__.py

@@ -67,10 +67,10 b' def convert(ui, src, dest=None, revmapfi'
       <source ID> <destination ID>
 
     If the file doesn't exist, it's automatically created. It's
-    updated on each commit copied, so convert-repo can be interrupted
+    updated on each commit copied, so :hg:`convert` can be interrupted
     and can be run repeatedly to copy new commits.
 
-    The [username mapping] file is a simple text file that maps each
+    The username mapping file is a simple text file that maps each
     source commit author to a destination commit author. It is handy
     for source SCMs that use unix logins to identify authors (eg:
     CVS). One line per author mapping and the line format is::

tests/test-convert.out

@@ -48,10 +48,10 b' convert a foreign SCM repository to a Me'
       <source ID> <destination ID>
 
     If the file doesn't exist, it's automatically created. It's updated on
-    each commit copied, so convert-repo can be interrupted and can be run
+    each commit copied, so "hg convert" can be interrupted and can be run
     repeatedly to copy new commits.
 
-    The [username mapping] file is a simple text file that maps each source
+    The username mapping file is a simple text file that maps each source
     commit author to a destination commit author. It is handy for source SCMs
     that use unix logins to identify authors (eg: CVS). One line per author
     mapping and the line format is: