CLN,TYP: Use subsitutions in info docstrings
Another precursor to #31796, which should make it easier to review/merge

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screenshots of docs

![image](https://user-images.githubusercontent.com/33491632/79745028-4f7bb480-82ff-11ea-90d5-8c111a449126.png)
![image](https://user-images.githubusercontent.com/33491632/79744668-aaf97280-82fe-11ea-95e6-7cc34eafbeac.png)
![image](https://user-images.githubusercontent.com/33491632/79744688-b8aef800-82fe-11ea-970f-053825465ef3.png)
![image](https://user-images.githubusercontent.com/33491632/79744720-c5335080-82fe-11ea-88c1-4728488f6221.png)

Lgtm - @jbrockmendel merge if happy Thanks @MarcoGorelli 