Merge pull request matplotlib#25022 from rcomer/constrained-axes-index

DOC: tweak array indexing in constrained layout tutorial

Author: tacaswell

tutorials/intermediate/constrainedlayout_guide.py

@@ -135,7 +135,7 @@ def example_plot(ax, fontsize=12, hide_labels=False):
 fig, axs = plt.subplots(3, 3, figsize=(4, 4), layout="constrained")
 for ax in axs.flat:
     im = ax.pcolormesh(arr, **pc_kwargs)
-fig.colorbar(im, ax=axs[1:, ][:, 1], shrink=0.8)
+fig.colorbar(im, ax=axs[1:, 1], shrink=0.8)
 fig.colorbar(im, ax=axs[:, -1], shrink=0.6)
 
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