Update contour.py

Author: sanrishi

lib/matplotlib/contour.py

@@ -1496,7 +1496,7 @@ def _initialize_x_y(self, z):
     The values must be in increasing order.
 
     If not specified, a reasonable default is automatically chosen. For
-    linear scales, this corresponds to *n=7* (using `~.ticker.MaxNLocator(8)`),
+    linear scales, this corresponds to *n=7* (using `~.ticker.MaxNLocator` with *nbins=8*),
     producing up to 9 "nice" contour boundaries. For logarithmic scales,
     `~matplotlib.ticker.LogLocator` is used instead.