Fix sidebar line-height. (#1182)

Author: ehuss

src/renderer/html_handlebars/helpers/toc.rs

@@ -191,7 +191,7 @@ fn write_li_open_tag(
     is_expanded: bool,
     is_affix: bool,
 ) -> Result<(), std::io::Error> {
-    let mut li = String::from("<li class=\"");
+    let mut li = String::from("<li class=\"chapter-item ");
     if is_expanded {
         li.push_str("expanded ");
     }

src/theme/css/chrome.css

@@ -423,7 +423,7 @@ ul#searchresults span.teaser em {
     display: none;
 }
 
-.chapter li.expanded {
+.chapter li.chapter-item {
     line-height: 1.5em;
     margin-top: 0.6em;
 }