style: adjust hero logo size to max-width 300px

- Set width: 100% with max-width: 300px for fox-logo.svg
- Apply to both English and Chinese homepages

Author: miclle

src/content/docs/index.mdx

@@ -8,7 +8,7 @@ hero:
   tagline: Fast, flexible, and powerful web framework built on Gin
   image:
     alt: Fox Web Framework Logo
-    html: '<img src="/fox-logo.svg" alt="Fox Logo" style="max-width: 400px; margin: 0 auto;" />'
+    html: '<img src="/fox-logo.svg" alt="Fox Logo" style="width: 100%; max-width: 300px; margin: 0 auto;" />'
   actions:
     - text: Get Started
       link: /guides/quickstart/

src/content/docs/zh-cn/index.mdx

@@ -8,7 +8,7 @@ hero:
   tagline: 快速、灵活、强大的 Web 框架，基于 Gin 构建
   image:
     alt: Fox Web Framework Logo
-    html: '<img src="/fox-logo.svg" alt="Fox Logo" style="max-width: 400px; margin: 0 auto;" />'
+    html: '<img src="/fox-logo.svg" alt="Fox Logo" style="width: 100%; max-width: 300px; margin: 0 auto;" />'
   actions:
     - text: 快速开始
       link: /zh-cn/guides/quickstart/