Bug: Broken chat links on deepseekcoder.github.io (DNS NXDOMAIN error)

**Problem:**
The official landing page hosted at [https://deepseekcoder.github.io/](https://deepseekcoder.github.io/) contains a broken "Try Now" link in the footer that leads to a DNS error (`NXDOMAIN`).

**Technical Evidence:**
* **Current Links:** `https://coder.deepseek.com/` (around line 87) and `https://coder.deepseek.com/chat` (around line 307) (Legacy domain).
* **Remote Address (F12):** `[2606:50c0:8002::153]:443` (Confirmed GitHub Pages hosting).
* **Correct Link:** `https://chat.deepseek.com/` (Verified via this repository's [README.md](https://github.com/deepseek-ai/DeepSeek-Coder/blob/main/README.md?plain=1#L15)).

**Location of the bug:**
The issue is likely located in the static repository that serves the GitHub Pages site:
`https://github.com/deepseekcoder/deepseekcoder.github.io/blob/main/index.html`

**Note:**
I am reporting it here in the main repository to ensure it reaches the official maintenance team.

**Suggested Fix:**
Update all occurrences of the legacy domain `https://coder.deepseek.com/` (found around lines 87 and 307) to the active domain `https://chat.deepseek.com/`.

I'd be happy to open a Pull Request in the static repository if that helps!

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**Screenshots:**

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