JDK 16 RFR of JDK-8251549: Update docs on building for Git

[Magnus Ihse Bursie]

On 2020-08-13 19:40, Joe Darcy wrote:
> Hello,
>
> Ahead of the JDK switching to Git, please review the updates to the 
> build docs:
>
>     JDK-8251549: Update docs on building for Git
>     http://cr.openjdk.java.net/~darcy/8251549.0/
Also (more a stylistic thing):
+    `git clone https://git.openjdk.java.net/jdk/`

Why not drop the trailing /? One less character to type, and you need 
not worry readers if it's strictly needed or not.

/Magnus
>
> This would be pushed shortly *after* the transition to Git.
>
> Once the changes to md are agree to, I'll regenerate the companion 
> html file.
>
> Thanks,
>
> -Joe
>