DOC: "Setting layouts" plots are hard to read
#### Location of the documentation

https://pandas.pydata.org/pandas-docs/dev/user_guide/visualization.html#using-layout-and-targeting-multiple-axes

**Note**: You can check the latest versions of the docs on `master` [here](https://pandas.pydata.org/docs/dev/).

#### Documentation problem

This is hard to read:
![image](https://user-images.githubusercontent.com/33491632/82655302-e2b74b00-9c19-11ea-9bdb-52c1e9d86f45.png)

Same with the plot immediately below it:
![image](https://user-images.githubusercontent.com/33491632/82655376-fcf12900-9c19-11ea-9e02-54eedf7c1600.png)


#### Suggested fix for documentation

Could the plots be made clearer, so the labels don't cover each other?
