convert: fix description of 'convert --rev'

hgext/convert/__init__.py

@@ -311,7 +311,7 b' cmdtable = {'
           ('d', 'dest-type', '',
            _('destination repository type'), _('TYPE')),
           ('r', 'rev', '',
-           _('import up to target revision REV'), _('REV')),
+           _('import up to source revision REV'), _('REV')),
           ('A', 'authormap', '',
            _('remap usernames using this file'), _('FILE')),
           ('', 'filemap', '',

tests/test-convert.t

@@ -262,7 +262,7 b''
   
    -s --source-type TYPE source repository type
    -d --dest-type TYPE   destination repository type
-   -r --rev REV          import up to target revision REV
+   -r --rev REV          import up to source revision REV
    -A --authormap FILE   remap usernames using this file
       --filemap FILE     remap file names using contents of file
       --splicemap FILE   splice synthesized history into place