Add nburris to components/payments/OWNERS

Max suggested I join components/payments/OWNERS :)

Also update the component since UI>Browser>Payments was removed in favor
of Blink>Payments.

Change-Id: I604bb739dab79bc13652993299bca7e839fd0421
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2536900Reviewed-by: Liquan (Max) Gu <maxlg@chromium.org>
Commit-Queue: Nick Burris <nburris@chromium.org>
Cr-Commit-Position: refs/heads/master@{#827438}

components/payments/OWNERS

 # TEAM: payments-dev@chromium.org
-# COMPONENT: UI>Browser>Payments
+# COMPONENT: Blink>Payments
 
 rouslan@chromium.org
 danyao@chromium.org
 maxlg@chromium.org
 sahel@chromium.org
+nburris@chromium.org
 
 # Emeritus
 gogerald@chromium.org