bug#34842: 26.1; Alist documentation: let-alist

[Drew Adams]

Thanks for filing the bug, BTW.

> I thought that the example in the docstring was
> too long compared to the smaller/simpler examples
> in the rest of the page, but wouldn't be against
> using that instead if it's more clear. 

The example could be shorter, yes.  But it needs
to be correct and show what `let-alist' does.

> The nested access example is in .site.contents,

But the doc talks about nested uses of `let-alist'.
There is only one `let-alist' in the example that the
doc claims shows the behavior of nesting `let-alist'.