fix: allow dashes and underscores in block references (closes #712)

Jacky Zhao

2024-01-20 1f2ea96ae0700f1cd4267f9bac7a59a8962f961f

 quartz/components/styles/clipboard.scss

@@ -4,7 +4,7 @@
  float: right;
  right: 0;
  padding: 0.4rem;
  margin: -0.2rem 0.3rem;
  margin: 0.3rem;
  color: var(--gray);
  border-color: var(--dark);
  background-color: var(--light);