General issue - "Loop variable capture" documentation

**Description of the issue**

See [**Loop variable capture**](https://lgtm.com/rules/7890089/):
https://lgtm.com/rules/7890089/

> ### Recommendation
>
> The simplest way to fix this problem is to add a local variable of the same name as the outer variable and initialize that using the outer variable as a default. for var in seq: ... def inner_func(arg): ... use(var) becomes for var in seq: ... def inner_func(arg, var=var): ... use(var)`

I think the code at the end of the paragraph is not supposed to be a one-liner. It should span multiple lines, with crucial but missing indentation.