docs: acknowledge Linfeng Cloud in sponsor sections (#2604)

Add Linfeng Cloud to both README sponsor sections, using the
partner link from the project website. Store its logo locally so it
renders on GitHub without relying on the partner site.

README.md

@@ -317,6 +317,7 @@ CDN acceleration and security protection for this project are sponsored by Tence
 </p>
 
 Special thanks to [Langlang Cloud](https://langlangy.cn/?i26c5a5)  and [RainCloud](https://www.rainyun.com/NjM0NzQ1_) for sponsoring our public servers.
+We also thank [Linfeng Cloud (林枫云)](https://www.dkdun.cn/aff/RZGBFYSW) for supporting EasyTier.
 
 <p align="center">
 <a href="https://langlangy.cn/?i26c5a5" target="_blank">
@@ -325,6 +326,9 @@ Special thanks to [Langlang Cloud](https://langlangy.cn/?i26c5a5)  and [RainClou
 <a href="https://langlangy.cn/?i26c5a5" target="_blank">
 <img src="assets/raincloud.png" width="200">
 </a>
+<a href="https://www.dkdun.cn/aff/RZGBFYSW" target="_blank">
+<img src="assets/linfengyun.png" width="200" alt="林枫云">
+</a>
 </p>
 
 

README_CN.md

@@ -314,6 +314,7 @@ EasyTier 在 [LGPL-3.0](https://github.com/EasyTier/EasyTier/blob/main/LICENSE)
 </p>
 
 特别感谢 [浪浪云](https://langlangy.cn/?i26c5a5) 和 [雨云](https://www.rainyun.com/NjM0NzQ1_) 赞助我们的公共服务器。
+也感谢 [林枫云](https://www.dkdun.cn/aff/RZGBFYSW) 对 EasyTier 的支持。
 
 <p align="center">
 <a href="https://langlangy.cn/?i26c5a5" target="_blank">
@@ -322,6 +323,9 @@ EasyTier 在 [LGPL-3.0](https://github.com/EasyTier/EasyTier/blob/main/LICENSE)
 <a href="https://langlangy.cn/?i26c5a5" target="_blank">
 <img src="assets/raincloud.png" width="200">
 </a>
+<a href="https://www.dkdun.cn/aff/RZGBFYSW" target="_blank">
+<img src="assets/linfengyun.png" width="200" alt="林枫云">
+</a>
 </p>
 
 如果您觉得 EasyTier 有帮助，请考虑赞助我们。软件开发和维护需要大量的时间和精力，您的赞助将帮助我们更好地维护和改进 EasyTier。