RFR: 8231776: ZGC: Fix incorrect address space description

[erik.osterlund at oracle.com]

Hi Per,

Looks good.

/Erik

On 10/3/19 12:28 AM, Per Liden wrote:
> After JDK-8224820, the space between the Remapped heap view and the 
> Marked1 heap view is no longer reserved. The ASCII art describing the 
> address space layout should be updated to reflect that.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8231776
> Webrev: http://cr.openjdk.java.net/~pliden/8231776/webrev.0
>
> /Per