Adds WHATWG icon (#492)

images/reference/index.md

@@ -263,3 +263,4 @@ Where possible this links to the organisation's brand guidelines page.
 | <img src="/images/svg/jacobin.svg" width="256" /> | <img src="/images/reference/jacobin.svg" width="256" /> | https://www.jacobinmag.com/contact |
 | <img src="/images/svg/thisamericanlife.svg" width="256" /> | <img src="/images/reference/thisamericanlife.png" width="256" /> | https://www.npr.org/about-npr/179876898/terms-of-use |
 | <img src="/images/svg/cplusplus.svg" width="256" /> | <img src="/images/reference/cplusplus.svg" width="256" /> | https://isocpp.org/home/terms-of-use |
+| <img src="/images/svg/whatwg.svg" width="256" /> | <img src="/images/reference/whatwg.svg" width="256" /> | https://whatwg.org/ipr-policy |

images/reference/whatwg.svg

@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100">
+<circle cx="50" cy="50" r="45" fill="#fff" stroke="#3c790a" stroke-width="10"/>
+<path d="m38,38c0-12,24-15,23-2c0,9-16,13-16,23v7h10v-4c0-9,17-12,17-27c-2-22-45-22-45,3zm7,32h10v10h-10" fill="#3c790a"/>
+</svg>
+

images/svg/whatwg.svg

@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg"
+aria-label="WHATWG" role="img"
+viewBox="0 0 512 512"><rect
+width="512" height="512"
+rx="15%"
+fill="#fff"/><path d="M215,215c0,-41.28,82.56,-51.6,79.12,-6.88c0,30.96,-55.04,44.72,-55.04,79.12v24.08h34.4v-13.76c0,-30.96,58.48,-41.28,58.48,-92.88c-6.88,-75.68,-154.8,-75.68,-154.8,10.32zm24.08,110.08h34.4v34.4h-34.4" fill="#3c790a"/><circle cx="256" cy="256" r="154.5" fill="none" stroke="#3c790a" stroke-width="37.5"/></svg>