Backport PR #15297 on branch v3.1.1-doc (Document How-to figure empty)#15323

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timhoffm merged 1 commit intomatplotlib:v3.1.1-docfrom

meeseeksmachine:auto-backport-of-pr-15297-on-v3.1.1-doc

Sep 21, 2019

Commits on Sep 21, 2019

Backport PR #15297: Document How-to figure empty

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