MAINTAINERS: add entry for traditional Chinese documentation

Add maintainer information for traditional Chinese documentation.
Signed-off-by: Hu Haowen <src.res@email.cn>
Reviewed-by: Pan Yunwang <panyunwang849@gmail.com>
Link: https://lore.kernel.org/r/20210729155627.41744-3-src.res@email.cnSigned-off-by: Jonathan Corbet <corbet@lwn.net>

MAINTAINERS

@@ -18790,6 +18790,14 @@ F:	arch/x86/mm/testmmiotrace.c
 F:	include/linux/mmiotrace.h
 F:	kernel/trace/trace_mmiotrace.c
 
+TRADITIONAL CHINESE DOCUMENTATION
+M:	Hu Haowen <src.res@email.cn>
+L:	linux-doc-tw-discuss@lists.sourceforge.net
+S:	Maintained
+W:	https://github.com/srcres258/linux-doc
+T:	git git://github.com/srcres258/linux-doc.git doc-zh-tw
+F:	Documentation/translations/zh_TW/
+
 TRIVIAL PATCHES
 M:	Jiri Kosina <trivial@kernel.org>
 S:	Maintained