bug#46702: Link symbol name in Help

[Peter Dean]

>
> Even there, I think removing the "Documentation:" line makes sense --
> the "Value:" line clearly demarcates the documentation from the value.
>

The line "Its value is shown below." even links to the value.

Changing this line to "Its value is shown below the documentation." where
"below the documentation" is the new link text, and removing the
"Documentation:" line may be a good solution which makes things
really obvious even in the large value case.