[heavy_tails] update axis labels

[shlff]

Hi @jstac this PR updates axis labels in the heavy_tails lecture.

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[shlff]

The following links result in the failure of the link checker (cc @mmcky ):

• mle (line 259): https://docs.scipy.org/doc/scipy/reference/generated/scipy.integrate.quad.html
• lp_intro (line 501): https://docs.scipy.org/doc/scipy/reference/generated/scipy.optimize.minimize_scalar.html#scipy.optimize.minimize_scalar
• solow (line 462): https://docs.scipy.org/doc/scipy/reference/generated/scipy.optimize.linprog.html#scipy.optimize.linprog

[mmcky]

The following links result in the failure of the link checker (cc @mmcky ):

• mle (line 259): https://docs.scipy.org/doc/scipy/reference/generated/scipy.integrate.quad.html
• lp_intro (line 501): https://docs.scipy.org/doc/scipy/reference/generated/scipy.optimize.minimize_scalar.html#scipy.optimize.minimize_scalar
• solow (line 462): https://docs.scipy.org/doc/scipy/reference/generated/scipy.optimize.linprog.html#scipy.optimize.linprog

@HengchengZhang would you have time to review these links?

[mmcky]

@jstac the link checker is failing to pass. Otherwise this PR is building OK re: previews and html.

Please go ahead when you're ready.

[jstac]

@shlff , from this display it looks like the xlabel on 523 comes after ax.legend(). Don't you want it to be on line 520 and indented the same as ylabel?

[shlff]

Thanks @jstac .

There are three stacked plots aligned by the same x-axis. With the above code I intended to keep only the x-axis label for the bottom plot to avoid repetition.

However, to add more clarity, I think it might be better to change it back. Please find the commit below.

[jstac]

Thanks @shlff and @mmcky .

@shlff , could you please check my comment above? It might just be a problem with GitHub's code display.

[shlff]

Thanks @shlff and @mmcky .

@shlff , could you please check my comment above? It might just be a problem with GitHub's code display.

Thanks @jstac . I fixed the indentation problem, and now the x labels should appear in the correct place in the newest preview.

Thanks @mmcky for looking at the issue of the link checker.

[jstac]

Many thanks @shlff , much appreciated!