Fix a typo in the grdview surface example
@@ -6,7 +6,7 @@ The :meth:`pygmt.Figure.grdview()` method can plot 3-D surfaces with ``surftype=
we supply the data as an :class:`xarray.DataArray` with the coordinate vectors ``x`` and
``y`` defined. Note that the ``perspective`` parameter here controls the azimuth and
elevation angle of the view. We provide a list of two arguments to ``frame`` - the
-first argument specifies the :math:`x`- and :math:`y`:-axes frame attributes and the
+first argument specifies the :math:`x`- and :math:`y`-axes frame attributes and the
second argument, prepended with ``"z"``, specifies the :math:`z`-axis frame attributes.
Specifying the same scale for the ``projection`` and ``zcale`` parameters ensures equal
axis scaling. The ``shading`` parameter specifies illumination; here we choose an azimuth of
