Update documentation link

Author: fguillot

Template/project/integrations.php

@@ -1,5 +1,5 @@
 <h3><i class="fa fa-bitbucket fa-fw"></i>&nbsp;<?= t('Bitbucket webhooks') ?></h3>
 <div class="panel">
     <input type="text" class="auto-select" readonly="readonly" value="<?= $this->url->href('WebhookController', 'handler', array('plugin' => 'BitbucketWebhook', 'token' => $webhook_token, 'project_id' => $project['id']), false, '', true) ?>"/><br/>
-    <p class="form-help"><a href="https://kanboard.net/plugin/bitbucket-webhook" target="_blank"><?= t('Help on Bitbucket webhooks') ?></a></p>
+    <p class="form-help"><a href="https://github.com/kanboard/plugin-bitbucket-webhook#documentation" target="_blank"><?= t('Help on Bitbucket webhooks') ?></a></p>
 </div>