Rollup merge of #81558 - pickfire:patch-5, r=GuillaumeGomez
Rollup merge of #81558 - pickfire:patch-5, r=GuillaumeGomez

Fix ascii art text wrapping in mobile

Fix #81377

Before

![image](https://user-images.githubusercontent.com/4687791/106362405-a1a53800-635d-11eb-87b9-2f40bbd023bf.png)
![image](https://user-images.githubusercontent.com/4687791/106362410-aa960980-635d-11eb-96ee-979251b213a3.png)
![image](https://user-images.githubusercontent.com/4687791/106362562-80911700-635e-11eb-97ee-b19a6ea2fc6d.png)

After

![image](https://user-images.githubusercontent.com/4687791/106362428-b4b80800-635d-11eb-8d5b-e4f51f5501ee.png)
![image](https://user-images.githubusercontent.com/4687791/106362433-bbdf1600-635d-11eb-96af-7043c74b3a0a.png)
![image](https://user-images.githubusercontent.com/4687791/106362570-8f77c980-635e-11eb-928d-ef1d26c13136.png)

Note the second image is scrolled to the back (right), I added some padding for the text block (not the code block) to make it more comfortable to read since the last character is stuck to the last character.

graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust