fix: broken RSS item's link, which were set to `https:/${base}`. (#687)

ikorihn

2024-01-13 52e6c037309a752741f79264afb3e83cd75feabc

 quartz/styles/base.scss

@@ -332,6 +332,7 @@
  border-radius: 5px;
  overflow-x: auto;
  border: 1px solid var(--lightgray);
  position: relative;

  &:has(> code.mermaid) {
    border: none;