relative path for link heading svg icon

Author: thescientist13

src/styles/theme.css

@@ -76,7 +76,7 @@ h2 > a > span.icon {
   height: var(--size-4);
   padding: var(--size-2);
   display: inline-block;
-  background-image: url(/assets/link.svg);
+  background-image: url("../assets/link.svg");
   background-size: var(--size-3) var(--size-3);
   background-repeat: no-repeat;
   background-position-y: center;