fix typo

Author: Jeff Whitaker

examples/wiki_example.py

@@ -1,7 +1,7 @@
 from mpl_toolkits.basemap import Basemap
 import matplotlib.pyplot as plt
 import numpy as np
-# set up orthographic bmap projection with
+# set up orthographic map projection with
 # perspective of satellite looking down at 50N, 100W.
 # use low resolution coastlines.
 bmap = Basemap(projection='ortho',lat_0=45,lon_0=-100,resolution='l')