Give one paragraph dd same lineheight as multiple paragraph ones

sass/_theme_rst.sass

@@ -288,6 +288,7 @@
     // rST seems to want dds to be treated as the browser would, indented.
     dd
       margin: 0  0 $base-line-height / 2 $base-line-height
+      line-height: $base-line-height
   // This is what Sphinx spits out for it's autodocs. Depending upon what language the person is referencing
   // these things usually have a class of "method" or "class" or something similar, but really who knows.
   // Sphinx doesn't give me a generic class on these, so unfortunately I have to apply it to the root dl.