[Dovecot] Roff typo in sievec.1.in

[Mike Abbott]

There is a roff typo in pigeonhole's sievec.1.in.  Roff treats the leading apostrophe on line 54 as an invalid command and produces bad output:
              dump  to  be written to stdout.  The out-file argument may
              also be omitted, which has the same effect as for  a  com-
              piled  Sieve  binary  file.  Note  that this option is not
The output should be:
              dump  to  be written to stdout.  The out-file argument may
              also be omitted, which has the same effect  as  '-'.   The
              output is identical to what the sieve-dump(1) command pro-
              duces for a compiled Sieve binary  file.  Note  that  this

Here is a patch:
--- a/doc/man/sievec.1.in
+++ b/doc/man/sievec.1.in
@@ -50,8 +50,9 @@
 Don\(aqt write the binary to \fIout\-file\fP, but write a textual dump of the
 binary instead. In this context, the \fIout\-file\fP value '\-' has special
 meaning: it causes the the textual dump to be written to \fBstdout\fP.
-The \fIout\-file\fP argument may also be omitted, which has the same effect as
-'\-'. The output is identical to what the \fBsieve\-dump\fP(1) command produces
+The \fIout\-file\fP argument may also be omitted, which has the same effect
+as '\-'.
+The output is identical to what the \fBsieve\-dump\fP(1) command produces
 for a compiled Sieve binary file. Note that this option is not allowed when the
 \fIout\-file\fP argument is a directory.
 .TP