Minor fix in the help string.

@@ -29,7 +29,7 @@ static char args_doc[] = N_("[arg...]");
 static struct argp_option options[] = {
   {"compile", 'c', NULL,   0, N_("print C compiler flags to compile with"), 0},
   {"link",    'l', NULL,   0,
-   N_("print libraries to link with. Possible arguments are: auth, guile, all,"
+   N_("print libraries to link with. Possible arguments are: auth, guile, all, "
       "mbox, mh, maildir, imap, pop"), 0},
   {"info", 'i', NULL, 0,
    N_("print a list of configuration options used to build mailutils. If arguments "

@@ -54,7 +54,7 @@ static struct argp_option options[] = {
    N_("Set the mhl filter to preprocess the body of the message being replied")},
   {"form",   ARG_FORM, N_("FILE"), 0, N_("Read format from given file")},
   {"format", ARG_FORMAT, N_("BOOL"), OPTION_ARG_OPTIONAL,
-   N_("Include a copy of the message being replied. The message will be processed either using the default filter \"mhl.reply\", or using the filter specified by --filter option.") },
+   N_("Include a copy of the message being replied. The message will be processed using either the default filter \"mhl.reply\", or the filter specified by --filter option.") },
   {"inplace", ARG_INPLACE, N_("BOOL"), OPTION_ARG_OPTIONAL,
    N_("* Annotate the message in place")},
   {"query", ARG_QUERY, N_("BOOL"), OPTION_ARG_OPTIONAL,