Update links

Notification/Mattermost.php

@@ -75,7 +75,7 @@ public function getMessage(array $project, $event_name, array $event_data)
         return array(
             'text' => $message,
             'username' => 'Kanboard',
-            'icon_url' => 'https://kanboard.org/assets/img/favicon.png',
+            'icon_url' => 'https://raw.githubusercontent.com/kanboard/kanboard/master/assets/img/favicon.png',
         );
     }
 

Template/config/integration.php

@@ -3,7 +3,7 @@
     <?= $this->form->label(t('Webhook URL'), 'mattermost_webhook_url') ?>
     <?= $this->form->text('mattermost_webhook_url', $values) ?>
 
-    <p class="form-help"><a href="https://github.com/kanboard/plugin-mattermost/blob/master/README.md" target="_blank"><?= t('Help on Mattermost integration') ?></a></p>
+    <p class="form-help"><a href="https://github.com/kanboard/plugin-mattermost#configuration" target="_blank"><?= t('Help on Mattermost integration') ?></a></p>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>

Template/project/integration.php

@@ -6,7 +6,7 @@
     <?= $this->form->label(t('Channel/Group/User (Optional)'), 'mattermost_webhook_channel') ?>
     <?= $this->form->text('mattermost_webhook_channel', $values, array(), array('placeholder="channel"')) ?>
 
-    <p class="form-help"><a href="https://github.com/kanboard/plugin-mattermost/blob/master/README.md" target="_blank"><?= t('Help on Mattermost integration') ?></a></p>
+    <p class="form-help"><a href="https://github.com/kanboard/plugin-mattermost#configuration" target="_blank"><?= t('Help on Mattermost integration') ?></a></p>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>