fix(a11y): increased content-meta text contrast (#1980)

Emile Bangma

2025-05-24 c9741d00f3c7745929008b17288c58bbe5f18aef

 quartz/components/styles/contentMeta.scss

@@ -1,6 +1,6 @@
.content-meta {
  margin-top: 0;
  color: var(--gray);
  color: var(--darkgray);

  &[show-comma="true"] {
    > *:not(:last-child) {