Add missing dimension in genfrac LaTeX example.

QuLogic · QuLogic · commit 8d5a575337a7 · 2020-12-17T00:26:27.000-05:00
This appears unnecessary in mathtext, but LaTeX requires the dimension.
diff --git a/tutorials/text/mathtext.py b/tutorials/text/mathtext.py
@@ -97,7 +97,7 @@
 
 .. 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::
 
