copy.js in lookbook-0.5.2

- old
+ new

@@ -2,10 +2,12 @@
   return {
     get content() {
       const target = document.getElementById(
         this.$root.getAttribute("data-target")
       );
-      return (target ? target.innerHTML : "").trim();
+      const decoder = document.createElement("textarea");
+      decoder.innerHTML = target ? target.innerHTML : "";
+      return decoder.value.trim();
     },
     done: false,
     async save() {
       await window.navigator.clipboard.writeText(this.content);
       this.done = true;