man: Fix bogus markup

Remove markups for missing or unbalanced items.

man/dpkg.1

@@ -781,7 +781,6 @@ shell \fIcommand\fR's standard input, to be run via \*(lqsh \-c\*(rq
 (since dpkg 1.16.0).
 This option can be specified multiple times.
 The output format used is the same as in \fB\-\-status\-fd\fP.
-.RE
 .TP
 \fB\-\-log=\fP\fIfilename\fP
 Log status change updates and actions to \fIfilename\fP, instead of

man/update-alternatives.1

@@ -426,8 +426,7 @@ there is no alternatives available.
 .BI Value: " currently-selected-alternative"
 The path of the currently selected alternative. It can also take the magic
 value \fBnone\fR. It is used if the link doesn't exist.
-.TP
-.TP
+.PP
 The other blocks describe the available alternatives in the queried link group:
 .TP
 .BI Alternative: " path-of-this-alternative"