fix: slugify tag on page before adding (closes #411)

Jacky Zhao

2023-08-27 52ca312f41ee6da5202cd9632d8501340ada3a67

 quartz/components/styles/darkmode.scss

@@ -2,6 +2,7 @@
  position: relative;
  width: 20px;
  height: 20px;
  margin: 0 10px;

  & > .toggle {
    display: none;