avoid groff warnings

git-svn-id: https://xpra.org/svn/Xpra/trunk@22635 3bb7dfac-3a0b-4e04-842a-767bc560f471

src/man/xpra.1

@@ -671,7 +671,9 @@ the pipe character \fI|\fP which is used as delimiter, or newlines
 and carriage returns.
 This module is deprecated, \fIsqlite\fP should be used instead.
 
-.IP \fBsqlite\fP, \fBmysql\fP and \fBsql\fP
+.IP \fBsqlite\fP
+.IP \fBmysql\fP
+.IP \fBsql\fP
 checks the username and password against the sqlite database file
 specified using the \fIfilename\fP option (for the \fIsqlite\fP backend),
 or the database specified using the \fIuri\fP option