fix: change callout metadata regex to include non-letter characters (#1174)

Alex Nordstrom

2024-05-29 9ff4626d25aa28891e92d533f6513a43e3374e13

 quartz/components/styles/legacyToc.scss

@@ -12,7 +12,7 @@
      margin: 0;
    }
  }
    

  & ul {
    list-style: none;
    margin: 0.5rem 1.25rem;