Clean up SVG files and update logos

- Removed unnecessary XML and DOCTYPE declarations from SVG files.
- Eliminated comments within SVG files for cleaner output.
- Trimmed leading and trailing whitespace from SVG content.
- Ensured all SVG files end with a newline character.
- Updated multiple logo SVG files including WireGuard, Wise, WOG, Yahoo, and others to conform to the new standards.
- Enhanced the update-data.js script to automate the cleanup process for SVG files.

public/images/flags/ad-1806–1866.svg

@@ -1,4 +1,4 @@
 <svg xmlns="http://www.w3.org/2000/svg" width="100%" height="100%" viewBox="0 0 6 4">
     <path d="M0,0H6V4H0z" fill="#d81c3f" />
     <path d="M0,0H3V4H0z" fill="#fce016" />
-</svg>
+</svg>