minor fix

Author: dikwickley

pybamm/meshes/one_dimensional_submeshes.py

@@ -127,7 +127,7 @@ class Exponential1DSubMesh(SubMesh1D):
     gridpoints
 
     .. math::
-        x_{k} = (b/2-a) + \\frac{\mathrm{e}^{\\alpha k / N} - 1}\mathrm{e}e^{\\alpha} - 1} + a,
+        x_{k} = (b/2-a) + \\frac{\mathrm{e}^{\\alpha k / N} - 1}{\mathrm{e}^{\\alpha} - 1} + a,
 
     for k = 1, ..., N. The grid spacing is then reflected to contruct the grid
     on the full interval [a,b].