Bug#883011: add use URI to man page

[積丹尼 Dan Jacobson]

Package: liburi-perl
Version: 1.72-2
Severity: wishlist
File: /usr/share/man/man3/URI.3pm.gz

SYNOPSIS
        $u1 = URI->new("http://www.perl.com";);

is missing

       use URI;
at top.