design/tpl (Classification System): Reduce height for intro vdots

The subscript of the matrix family adds too much vertical space.  This
offsets that to restore it to about what it otherwise would be, since the
second subscript does not get in the way.

design/tpl/sec/class.tex

@@ -22,11 +22,9 @@ This limitation is mitigated through use of the template system.
 \begin{alignat}{3}
     &\xml{<classify as="$c$" }&&\xml{yields="$\gamma$" desc}&&\xml{="$\_$"
           $\alpha$>}\label{eq:xml-classify} \\
-    &\quad \MFam{M^0}jJkK   &&\VFam{v^0}jJ   &&\quad s^0    \nonumber\\
-    % TODO: offset these dots vertically (negative); MFam stacking is
-    % pushing them down too far and it's visually jarring
+    &\quad \MFam{M^0}jJkK   &&\VFam{v^0}jJ   &&\quad s^0    \nonumber\\[-4mm]
     &\quad \quad\vdots    &&\quad\vdots    &&\quad \vdots \nonumber\\
-    &\quad \MFam{M^l}jJkK   &&\VFam{v^m}jJ   &&\quad s^n    \nonumber\\
+    &\quad \MFam{M^l}jJkK   &&\VFam{v^m}jJ   &&\quad s^n    \nonumber\\[-3mm]
     &\xml{</classify>}
       % NB: This -50mu needs adjustment if you change the alignment above!
       &&\mspace{-50mu}= \Classify^c_\gamma\left(\odot,M,v,s\right), \nonumber