docs(maintainers): update corstone1000 maintainers

Update maintainers list for corstone1000 platform.

Signed-off-by: Xueliang Zhong <xueliang.zhong@arm.com>
Change-Id: I779e3717f6a6e19d32e8568eda05204cd46f35ea
diff --git a/docs/about/maintainers.rst b/docs/about/maintainers.rst
index 447d108..6042053 100644
--- a/docs/about/maintainers.rst
+++ b/docs/about/maintainers.rst
@@ -501,8 +501,8 @@
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 :|M|: Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>
 :|G|: `abdellatif-elkhlifi`_
-:|M|: Vishnu Banavath <vishnu.banavath@arm.com>
-:|G|: `vishnu-banavath`_
+:|M|: Xueliang Zhong <xueliang.zhong@arm.com>
+:|G|: `xueliang-zhong-arm`_
 :|F|: plat/arm/board/corstone700
 :|F|: plat/arm/board/a5ds
 :|F|: plat/arm/board/corstone1000
@@ -1027,3 +1027,4 @@
 .. _hilamirandakuzi1: https://github.com/hilamirandakuzi1
 .. _rutigl: https://github.com/rutigl
 .. _avifishman: https://github.com/avifishman
+.. _xueliang-zhong-arm: https://github.com/xueliang-zhong-arm