PR:
Submitted by:
Reviewed by: -doc
Approved by: bmah
Obtained from:
MFC after:

Clarify "what are goals" question. Since this is the closest thing
FreeBSD has to a mission statement, it has been extensively reviewed
on -doc and revised a few times before commit, so I'm making quite an
extensive commit message.

-only one goal is listed, so don't use plural "goals." That goal does
have several sub-components, but it's one primary goal.

-use URLs instead of file links, so people who are browsing docs
locally can use the link.

-add an extra question on BSD license here, since we're discussing it
anyway. bmah said (paraphrased): he would have probably split it into
a separate commit, but approved as submitted. Will do so in the
future.