website/integrations: Update Discord login docs (#5345)

* Added trailing slash to redirect URI

Signed-off-by: Lázaro Blanc <40198445+lazaroblanc@users.noreply.github.com>

* updated images and removed unused one

---------

Signed-off-by: Lázaro Blanc <40198445+lazaroblanc@users.noreply.github.com>
Co-authored-by: Lázaro Blanc <lazaroblanc@users.noreply.github.com>

website/integrations/sources/discord/index.md

@@ -28,11 +28,11 @@ The following placeholders will be used:
 
 5. **Click to Reveal** the Client Secret and _save it for later_
 
-6. Click **Add Redirect** and add https://authentik.company/source/oauth/callback/discord
+6. Click **Add Redirect** and add https://authentik.company/source/oauth/callback/discord/
 
 Here is an example of a completed OAuth2 screen for Discord.
 
-![](discord4.png)
+![](discord3.png)
 
 ## authentik
 
@@ -45,7 +45,7 @@ Here is an example of a completed OAuth2 screen for Discord.
 
 Here is an example of a complete authentik Discord OAuth Source
 
-![](discord5.png)
+![](discord4.png)
 
 Save, and you now have Discord as a source.