#!/usr/bin/perl

use strict; # https://perlmonks.org/?node_id=11119206
use warnings;

my $text = "blah blah [click me](click me) more stuff\nblah [link here](link here) blah blah";

s!]\(\K.*?\)! '/' . $& =~ tr~ ~-~r !ge for $text;

print "$text\n";