Use proper tags for AUTHORS section in manpage

Fix some mandoc -Tlint warnings as well.

noice.1

@@ -43,7 +43,7 @@ Open file or enter directory.
 Back up one directory level.
 .It Ic / or &
 Change filter (see below for more information).
-.It Ic ?
+.It Ic \&?
 Enter filter-as-you-type mode.
 .It Ic c
 Change into the given directory.
@@ -51,7 +51,7 @@ Change into the given directory.
 Toggle sort by time modified.
 .It Ic l
 Force a redraw.
-.It Ic !
+.It Ic \&!
 Spawn an sh shell in current directory.
 .It Ic z
 Run the system top utility.
@@ -108,8 +108,6 @@ struct assoc assocs[] = {
 .Ed
 .Sh KNOWN ISSUES
 If you are using urxvt you might have to set backspacekey to DEC.
-.Pp
 .Sh AUTHORS
-.Nm
-was developed by Lazaros Koromilas <lostd@2f30.org> with
-contributions by Dimitris Papastamos <sin@2f30.org>.
+.An Lazaros Koromilas Aq Mt lostd@2f30.org ,
+.An Dimitris Papastamos Aq Mt sin@2f30.org .