Update deepseek.mdx (#18994)

* Update deepseek.mdx

DeepSeek AI --> DeepSeek

* Update ai-gateway.yaml

added changelog

Author: kathayl

src/content/changelogs/ai-gateway.yaml

@@ -5,6 +5,11 @@ productLink: "/ai-gateway/"
 productArea: Developer platform
 productAreaLink: /workers/platform/changelog/platform/
 entries:
+  - publish_date: "2025-01-02"
+    title: DeepSeek
+    description: |-
+      * **Configuration**: Added [DeepSeek](/ai-gateway/providers/deepseek/) as a new provider.
+    
   - publish_date: "2024-12-17"
     title: AI Gateway Dashboard
     description: |-

src/content/docs/ai-gateway/providers/deepseek.mdx

@@ -1,12 +1,12 @@
 ---
-title: DeepSeek AI
+title: DeepSeek
 pcx_content_type: get-started
 sidebar:
   badge:
     text: Beta
 ---
 
-[DeepSeek AI](https://www.deepseek.com/) helps you build quickly with DeepSeek's advanced AI models.
+[DeepSeek](https://www.deepseek.com/) helps you build quickly with DeepSeek's advanced AI models.
 
 ## Endpoint
 
@@ -16,7 +16,7 @@ https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/deepseek
 
 ## Prerequisites
 
-When making requests to DeepSeek AI, you will need:
+When making requests to DeepSeek, you will need:
 
 - AI Gateway Account ID
 - AI Gateway gateway name