MAINTAINERS: vrf: move Shrijeet to CREDITS

Shrijeet has moved on from VRF-related work.

Subsystem VRF
  Changes 30 / 120 (25%)
  Last activity: 2020-12-09
  David Ahern <dsahern@kernel.org>:
    Author 1b6687e31a2d 2020-07-23 00:00:00 1
    Tags 9125abe7b9cb 2020-12-09 00:00:00 4
  Shrijeet Mukherjee <shrijeet@gmail.com>:
  Top reviewers:
    [13]: dsahern@gmail.com
    [4]: dsa@cumulusnetworks.com
  INACTIVE MAINTAINER Shrijeet Mukherjee <shrijeet@gmail.com>

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
diff --git a/CREDITS b/CREDITS
index 3dceea7..98e7485 100644
--- a/CREDITS
+++ b/CREDITS
@@ -2704,6 +2704,10 @@
 E: wolfgang@iksw-muees.de
 D: Auerswald USB driver
 
+N: Shrijeet Mukherjee
+E: shrijeet@gmail.com
+D: Network routing domains (VRF).
+
 N: Paul Mundt
 E: paul.mundt@gmail.com
 D: SuperH maintainer