add all social options

Author: hahnbeelee

settings/global.mdx

@@ -361,7 +361,7 @@ Example:
 ```
 <Expandable title="FooterSocials">
   <ResponseField name="[key]" type="string">
-  One of the following values `website`, `facebook`, `x`, `youtube`, `discord`, `slack`, `github`, `linkedin`, `instagram`, `hacker-news`
+  One of the following values `website`, `facebook`, `x`, `youtube`, `discord`, `slack`, `github`, `linkedin`, `instagram`, `hacker-news`, `medium`, `telegram`, `twitter`
 
   Example: `x`
   </ResponseField>