user guide updates for code sections

rb/assets/user_guide.html.erb

@@ -5,6 +5,9 @@
       body {
         max-width: 140ex;
       }
+      .code {
+        padding-left: 2ex;
+      }
       .ruby_code .normal {}
       .ruby_code .comment { color: #005; font-style: italic; }
       .ruby_code .keyword { color: #A00; font-weight: bold; }

rb/gen_user_guide.rb

@@ -63,9 +63,9 @@ class Generator
     end
     if syntax != ""
       convertor = Syntax::Convertors::HTML.for_syntax(syntax)
-      %[<div class="#{syntax}_code">\n#{convertor.convert(code)}\n</div>\n]
+      %[<div class="code #{syntax}_code">\n#{convertor.convert(code)}\n</div>\n]
     else
-      %[<div class="code">\n#{code}\n</div>\n]
+      %[<div class="code">\n<pre>#{code}</pre>\n</div>\n]
     end
   end
 end