Correct reference to Matplotlib documentation

- matplotlib.pyplot.tripcolor, not matplotlib.pyplot.tricolor

Author: Kristjan Onu

lib/mpl_toolkits/basemap/__init__.py

@@ -3370,11 +3370,11 @@ def pcolor(self,x,y,data,**kwargs):
         As a result, those values will not be plotted.
 
         If ``tri`` is set to ``True``, an unstructured grid is assumed
-        (x,y,data must be 1-d) and matplotlib.pyplot.tricolor is used.
+        (x,y,data must be 1-d) and matplotlib.pyplot.tripcolor is used.
 
         Extra keyword ``ax`` can be used to override the default axis instance.
 
-        Other \**kwargs passed on to matplotlib.pyplot.pcolor (or tricolor if
+        Other \**kwargs passed on to matplotlib.pyplot.pcolor (or tripcolor if
         ``tri=True``).
 
         Note: (taken from matplotlib.pyplot.pcolor documentation)