updated comments

Author: dmalan

lib/jekyll-theme-cs50.rb

@@ -110,12 +110,13 @@ def describe(input, max_length = 160)
       # Parse HTML and extract text
       doc = Nokogiri::HTML5.fragment(html)
 
-      # Remove the page's title (first h1 tag)
+      # Remove the page's title (i.e., first h1 tag)
       doc.css("h1").first&.remove
 
-      # Remove table of contents (first ul with id of markdown-toc)
+      # Remove any table of contents
       doc.css("ul#markdown-toc").first&.remove
 
+      # Strip tags
       text = doc.text.strip
 
       # Clean up whitespace