Merge branch 'develop' into dependabot/npm_and_yarn/engine.io-6.2.1

Author: Koooooo-7

src/themes/dark.styl

@@ -121,6 +121,9 @@ body
   position relative
   word-wrap normal
 
+.markdown-section tr:nth-child(2n)
+    background-color #282828
+
 /* code highlight */
 .token.comment, .token.prolog, .token.doctype, .token.cdata
   color #8e908c