Update subtitle count in README

Updated the number of included subtitles from 20 to 50.

Author: LGYTreal

README.md

@@ -71,7 +71,7 @@ prefix: "/uv/service/",
 
 ## 🎨 Customization
 
-- **Subtitles** — Edit the `subtitles` array in `app.js` (20 included, "cosmic brownie" is in there 🍫)
+- **Subtitles** — Edit the `subtitles` array in `app.js` (50 included)
 - **Colors** — All in CSS variables at the top of `style.css`
 - **Fonts** — Uses `Syne` (logo) + `DM Mono` (body) from Google Fonts