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/md.svg

@@ -67,4 +67,4 @@
     <path d="M159.4 676.8h14.2v56.7h-14.2zM156 439.4h21.3c14.1 0-3.6 39-3.6 39h-14.1s-17.8-39-3.6-39zm17.6-5.4c0 3-3.1 5.4-7 5.4s-7.1-2.4-7.1-5.3 3.1-5.4 7-5.4 7.1 2.4 7.1 5.4z" transform="matrix(.49887 .1571 -.1826 .4713 451.4 -3.7)"/>
   </g>
   <path fill="#ff1900" fill-rule="evenodd" stroke="#000" stroke-width="1.1" d="M209 776c0 7.8-10.2 14.2-23 14.2s-23-6.4-23-14.2 10.3-14.2 23-14.2 23 6.4 23 14.2z" transform="matrix(.57449 -.36357 .38048 .54895 -2.3 4.2)"/>
-</svg>
+</svg>