Update images markup

Author: clementbiron

content/community/how-to-join-mattermost.md

@@ -19,7 +19,7 @@ Mattermost is an open-source collaboration platform with a simple, user-friendly
 
 After successful login, they will be redirected to the Open Term Archive workspace, where they will automatically be added to the  **\#announcement** channel.
 
-![Mattermost landing page interface](.attachments.1466/Onboarding%201.png)
+![Mattermost landing page interface]({{< relref "." >}}landing-page.png)
 
 ::: info
 By default, the Mattermost interface may be presented in French. If this is an issue, new members and contributors can translate the content to English using your browser’s built-in translation features.
@@ -28,31 +28,26 @@ By default, the Mattermost interface may be presented in French. If this is an i
 
 ## Profile setup
 
-Once you're all set on Mattermost, the next thing is to set up your profile. A complete profile sets you up for meaningful interactions and connections with members interested in tracking the same terms.  
-  
+Once you're all set on Mattermost, the next thing is to set up your profile. A complete profile sets you up for meaningful interactions and connections with members interested in tracking the same terms.
+
 This includes adding your full name, user name, pseudo (nickname), role, and profile picture. New members can set up their profiles by following these steps.
 
 1. Navigate to the uppermost right corner of Mattermost and click on the profile icon
-
-   ![Mattermost profile page](.attachments.1466/Open%20Terms%20Archive%20Onboarding%20Document%20%283%29_page-0001.jpg)
+   ![Mattermost profile page]({{< relref "." >}}profile-page.jpg)
 2. Click on the “**Modifier** ” to edit any details of your choice.
-
-   ![Open Terms Archive Onboarding Document (4)\_page-0001 (1).jpg](.attachments.1466/Open%20Terms%20Archive%20Onboarding%20Document%20%284%29_page-0001%20%281%29.jpg)
+   ![Edit profile page]({{< relref "." >}}edit-profile-page.jpg)
 
 ## Adding channels
 
 The Open Terms Archive workspace consists of several channels. Some are specific while others are general. New members and contributors can add any channel of your choice by following these steps:
 
 1. Navigate to the "**CHANNELS**" section on the left-hand sidebar.
 2. Toggle the "**CHANNELS**" button and click on “**Add Channels**”.
-
-   ![Adding Channels on Mattermost](.attachments.1466/Open%20Terms%20Archive%20Onboarding%20Document%20%282%29.png)
+   ![Adding Channels on Mattermost]({{< relref "." >}}adding-channels.png)
 3. A drop-down menu appears. Click “**Browse channel**” to see the list of all available channels on the Open Terms Archive workspace.
-
-   ![See Channels on Mattermost](.attachments.1466/Open%20Terms%20Archive%20Onboarding%20Document%20%285%29.jpg)
+   ![See Channels on Mattermost]({{< relref "." >}}see-channels.jpg)
 4. Find a channel that interests you from the list of available channels, and click **”join”** to add it to your workspace.
-
-   ![Joinning Channels on Mattermost](.attachments.1466/Open%20Terms%20Archive%20Onboarding%20Document%20%281%29%20%282%29.png)
+   ![Joinning Channels on Mattermost]({{< relref "." >}}joinning-channels.png)
 
 ## New members introduction
 
@@ -68,11 +63,9 @@ Leaving a channel is easy, just as adding a channel. In cases where a member wis
 
 1. Navigate to the channel you want to leave.
 2. Click on the three dots indicating the **‘’channel options’’**
-
-   ![Leaving Channel (1)](.attachments.1466/Open%20Terms%20Archive%20Onboarding%20Document%20%281%29_page-0001%20%282%29.jpg)
+   ![Channel options]({{< relref "." >}}channel-options.jpg)
 3. Select “**Leave the Canal**” from the dropdown menu and voila! You have successfully left that channel.
-
-   ![Leaving Channel (2)](.attachments.1466/Open%20Terms%20Archive%20Onboarding%20Document%20%282%29_page-0001.jpg)
+   ![Leave the Canal]({{< relref "." >}}leave-the-canal.jpg)
 
 ## Conclusion