Update TikTok logo & correct recent changes

- TikTok now displays correctly in Inkscape, in addition to being smaller
- corrected file sizes: Chrome, Chromium, Atom (I think editing through GitHub's editor saves files using CRLF, which I didn't notice at the time)

images/svg/tiktok.svg

@@ -1,5 +1,6 @@
 <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"
 aria-label="TikTok" role="img"
 viewBox="0 0 512 512"><rect
-rx="15%" height="512" width="512"
-fill="#fff"/><defs><path id="t" d="M219 200a117 117 0 1 0 101 115v-128a150 150 0 0 0 88 28v-63a88 88 0 0 1-88-88h-64v252a54 54 0 1 1-37-51z" style="mix-blend-mode:multiply"/></defs><use href="#t" fill="#f05" x="18" y="15"/><use href="#t" fill="#0ee"/></svg>
+width="512" height="512"
+rx="15%"
+fill="#fff"/><use xlink:href="#t" fill="#f05" x="18" y="15"/><g style="fill:#0ee;mix-blend-mode:multiply"><path id="t" d="m219 200a117 117 0 10101 115V187a150 150 0 0088 28v-63a88 88 0 01-88-88h-64v252a54 54 0 11-37-51"/></g></svg>