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

Jacky Zhao

2024-01-20 1f2ea96ae0700f1cd4267f9bac7a59a8962f961f

 quartz/components/styles/toc.scss

@@ -30,6 +30,7 @@
  overflow: hidden;
  max-height: none;
  transition: max-height 0.5s ease;
  position: relative;

  &.collapsed > .overflow::after {
    opacity: 0;