docs: Rewrite the what is VPP (first) section, also fix the build

Signed-off-by: John DeNisco <jdenisco@cisco.com>
Change-Id: Ifb558171f8976a721703e74afea997d006273b5f
Signed-off-by: Dave Barach <dave@barachs.net>
diff --git a/docs/about.rst b/docs/about.rst
index 786d896..eae97b2 100644
--- a/docs/about.rst
+++ b/docs/about.rst
@@ -4,6 +4,6 @@
 About
 =====
 
-**VPP Version:** 20.01-rc0~171-g1146ff4
+**VPP Version:** 20.01-rc0~594-g340c15c6e
 
-**Built on:** Wed Sep 11 12:59:45 GMT 2019
+**Built on:** Wed Nov  6 18:47:36 GMT 2019