Add tabler to icons.library documentation (#4398)

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Co-authored-by: mintlify[bot] <109931778+mintlify[bot]@users.noreply.github.com>

Author: mintlify[bot]

organize/settings.mdx

@@ -214,7 +214,7 @@ This section contains the full reference for the `docs.json` file.
   Icon library settings.
 
   <Expandable title="Icons">
-    <ResponseField name="library" type='"fontawesome" | "lucide"' required>
+    <ResponseField name="library" type='"fontawesome" | "lucide" | "tabler"' required>
       Icon library to use throughout your documentation. Defaults to `fontawesome`.
 
       You can only use one icon library for your project. All icon names in your documentation must come from the same library.