fix: do not cut off bottom portion of text

Author: dajrivera

src/themes/shared/_base.css

@@ -8,6 +8,7 @@
   font: inherit;
   -webkit-text-size-adjust: none;
   text-size-adjust: none;
+  line-height: normal;
 }
 
 html,

src/themes/shared/_markdown.css

@@ -248,6 +248,7 @@
     margin: 2rem 0 0.5em;
     color: var(--heading-color);
     font-weight: var(--heading-font-weight);
+    line-height: normal;
 
     /* Prevent long titles from causing horizontal scrolling */
     &[id] a {