add correct icon

src/index.html

@@ -56,7 +56,7 @@
                     type="button"
                     class="whiteboard-tool"
                 >
-                    <i class="fa fa-hand-paper-o" aria-hidden="true"></i>
+                    <i class="fa fa-hand-paper" aria-hidden="true"></i>
                 </button>
 
                 <button

src/js/icons.js

@@ -21,6 +21,7 @@ import {
     faInfoCircle,
     faGlobe,
     faStickyNote,
+    faHandPaper,
 } from "@fortawesome/free-solid-svg-icons";
 import {
     faSquare,
@@ -56,7 +57,8 @@ library.add(
     faLockOpen,
     faInfoCircle,
     faGlobe,
-    faStickyNote
+    faStickyNote,
+    faHandPaper
 );
 
 dom.i2svg();