fixed page

mattermost.md

@@ -9,9 +9,10 @@ cover: /assets/pages/mattermost.png
 - [NixNet](https://matter.nixnet.xyz/signup_user_complete/?id=n5qbfgiuaidmtmppetgj45zxuh)
 - [LenoirLUG](https://matter.nixnet.xyz/signup_user_complete/?id=rrko34wdzjfo5ykc49d1kkikeo)
 - [Linux Audio](https://matter.nixnet.xyz/signup_user_complete/?id=5ob84if1w3bx3n5phhsbjm3ohh)
+
 ## Theme
-I've created a theme for Mattermost that uses the same colour scheme as the NixNet website. Copy and paste the code below into the application's theme settings under `Custom`.
-```
+I've created a theme for Mattermost that uses the same colour scheme as the NixNet website. Copy and paste the code below into the application's theme settings under `Account Settings > Display > Theme > Custom Theme`.
+```css
 {
    "sidebarBg":"#242424",
    "sidebarText":"#ffffff",
@@ -26,8 +27,7 @@ I've created a theme for Mattermost that uses the same colour scheme as the NixN
    "dndIndicator":"#682b2b",
    "mentionBj":"#573c3c",
    "mentionColor":"#ffffff",
-   "centerChannelBg":
-   "#333333",
+   "centerChannelBg":"#333333",
    "centerChannelColor":"#ffffff",
    "newMessageSeparator":"#2b6863",
    "linkColor":"#5a76c7",