docs(showcase): fix pull request redirect link (#500)

Ben Schlegel

2023-09-22 d93599364a3dd0b46068826cf14ed7b25aa59fc3

 quartz/components/styles/footer.scss

@@ -1,6 +1,7 @@
footer {
  text-align: left;
  margin-bottom: 4rem;
  opacity: 0.7;

  & ul {
    list-style: none;