design/tpl (Meta: Typesetting): Correct use of \tameclass

That macro previously expanded into \Classify, but that was undone before
committing to make it clear when one is referring to a variable vs. a
classification as a definition.

design/tpl/sec/appendix-typesetting.tex

@@ -25,12 +25,12 @@ These are both written inline, respectively, as
 Classifications are canonically referred to by their \xmlattr{as}~name,
   which makes for a bit of an awkward-looking construction when the
   superscript is provided but not the subscript.
-For example, consider the classification $\tameclass{foo-bar}$ inline,
+For example, consider the classification $\Classify^\texttt{foo-bar}$ inline,
   compared to~$\Classify_\texttt{foo-bar}$.
 Now compare the display style
 
 \begin{equation*}
-  \tameclass{foo-bar}
+  \Classify^\texttt{foo-bar}
   \mspace{25mu}\text{vs.}\mspace{25mu}
   \Classify_\texttt{foo-bar}.
 \end{equation*}