Add missing dimension in genfrac LaTeX example.

QuLogic · QuLogic · commit 89b6314e55e4 · 2020-11-13T00:35:56.000-05:00
This appears unnecessary in mathtext, but LaTeX requires the dimension.
diff --git a/tutorials/text/mathtext.py b/tutorials/text/mathtext.py
@@ -94,7 +94,7 @@
 
 .. math::
 
-    \frac{3}{4} \binom{3}{4} \genfrac{}{}{0}{}{3}{4}
+    \frac{3}{4} \binom{3}{4} \genfrac{}{}{0pt}{}{3}{4}
 
 Fractions can be arbitrarily nested::
 
