DOC: Fix colorbar label for log-scaled hexbin

Fixes matplotlib#27383

Author: QuLogic

galleries/examples/statistics/hexbin_demo.py

@@ -29,7 +29,7 @@
 hb = ax1.hexbin(x, y, gridsize=50, bins='log', cmap='inferno')
 ax1.set(xlim=xlim, ylim=ylim)
 ax1.set_title("With a log color scale")
-cb = fig.colorbar(hb, ax=ax1, label='log10(N)')
+cb = fig.colorbar(hb, ax=ax1, label='counts')
 
 plt.show()