feat: render changelog as markdown in about panel (#33)

## Summary

- Installs `react-markdown@10.1.0` in `apps/web`
- Replaces the `<pre>` tag in the changelog section with the `<Markdown>` component for proper rendering
- Updates CSS to style markdown elements (paragraphs, lists, headings, code blocks, links, bold text)

Closes #31

✨ This PR was created with help from Hikari~ 🌸

Reviewed-on: #33
Co-authored-by: Hikari <hikari@nhcarrigan.com>
Co-committed-by: Hikari <hikari@nhcarrigan.com>

apps/web/src/components/game/aboutPanel.tsx

@@ -7,6 +7,7 @@
 /* eslint-disable max-lines-per-function -- HOW_TO_PLAY data and render logic */
 /* eslint-disable max-lines -- HOW_TO_PLAY data makes this file long */
 import { type JSX, useEffect, useState } from "react";
+import Markdown from "react-markdown";
 import { getAbout } from "../../api/client.js";
 import type { AboutResponse } from "@elysium/types";
 
@@ -331,7 +332,9 @@ const aboutPanel = (): JSX.Element => {
                   </span>
                 </button>
                 {expandedRelease === release.tag_name
-                  && <pre className="about-release-body">{release.body}</pre>
+                  && <div className="about-release-body">
+                    <Markdown>{release.body}</Markdown>
+                  </div>
                 }
               </li>
             );