Rename integration from Fern to Mintlify

- Rename file from fern.mdx to mintlify.mdx
- Update page title to 'Mintlify'
- Update navigation entry in docs.yml
- Update overview page card with Mintlify branding
- Update slug from sdks/fern to sdks/mintlify

Co-Authored-By: [email protected] <[email protected]>

Author: devin-ai-integration[bot]

fern/products/docs/docs.yml

@@ -269,9 +269,9 @@ navigation:
         slug: analytics/mixpanel
       - page: Postman
         path: ./pages/integrations/postman.mdx
-      - page: Fern
-        path: ./pages/integrations/sdks/fern.mdx
-        slug: sdks/fern
+      - page: Mintlify
+        path: ./pages/integrations/sdks/mintlify.mdx
+        slug: sdks/mintlify
       - page: LaunchDarkly feature flags 
         path: ./pages/integrations/feature-flags.mdx
         hidden: true

fern/products/docs/pages/integrations/overview.mdx

@@ -48,10 +48,10 @@ description: "Integrate with third party platforms for analytics, support, etc."
 />
 
 <Card
-  title="Fern"
-  href="/docs/integrations/sdks/fern"
+  title="Mintlify"
+  href="/docs/integrations/sdks/mintlify"
   horizontal
-  icon={<img src="https://buildwithfern.com/_next/image?url=%2Fimages%2Flogo-green.png&w=48&q=75" />}
+  icon={<img src="https://mintcdn.com/mintlify/e0-N9JebsJpsinlD/logo/light.svg" />}
   iconSize={12}
 />
 
@@ -107,4 +107,4 @@ are available during the workflow run.
 
 <Markdown src="/snippets/enterprise-plan.mdx"/>
 
-If you want to integrate with a third-party analytics or support platforms that Fern doesn't directly support, you can do so [using custom JS](/docs/customization/custom-css-js#custom-javascript).  
+If you want to integrate with a third-party analytics or support platforms that Fern doesn't directly support, you can do so [using custom JS](/docs/customization/custom-css-js#custom-javascript).    

fern/products/docs/pages/integrations/sdks/fern.mdx renamed to fern/products/docs/pages/integrations/sdks/mintlify.mdx

@@ -1,5 +1,5 @@
 ---
-title: "Fern"
+title: "Mintlify"
 description: "Automate SDK code snippets in your API playground"
 ---