Platform: nxp: fix nxp maintainer github account

Fix the nxp maintainer github account name.

Change-Id: Ie4020f181a2992ad55ec7ff93fb6bd49c43fb459
Signed-off-by: Andrej Butok <andrey.butok@nxp.com>
diff --git a/docs/contributing/maintainers.rst b/docs/contributing/maintainers.rst
index 2b9ac61..5b4c68d 100644
--- a/docs/contributing/maintainers.rst
+++ b/docs/contributing/maintainers.rst
@@ -152,7 +152,7 @@
 
 Andrej Butok
     :email: `Andrey.Butok@nxp.com <andrey.butok@nxp.com>`__
-    :github: `AndreyButokNXP <https://github.com/AndreyButokNXP>`__
+    :github: `butok <https://github.com/butok>`__
 
 STM Platforms: DISCO_L562QE, NUCLEO_L552ZE_Q
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