mblaze.7: local maildir spool wording

Closes: #87 [via git-merge-pr]

man/mblaze.7

@@ -73,7 +73,8 @@ arrange messages into discussions
 .Nm
 is a classic command line MUA and has no features
 for receiving or transferring messages;
-you are expected to fetch your messages using
+you can operate on messages in a local maildir spool,
+or fetch your messages using
 .Xr fdm 1 ,
 .Xr getmail 1 ,
 .Xr offlineimap 1 ,
@@ -86,8 +87,6 @@ as provided by
 OpenSMTPD,
 Postfix,
 or similar.
-.Nm
-expects your messages to reside in maildir folders.
 .Pp
 .Nm
 operates directly on maildir folders and doesn't