MAINTAINERS/CODEOWNERS: Add ziaee to mandoc + man/

If you tag me on manual reviews, I will help you. I'm very intersted in
helping keep things standard and predictable across the manual. As these
files say, this is not intended to imply any desire for blocking.

MFC after:	3 days

.github/CODEOWNERS

@@ -40,6 +40,7 @@
 /contrib/llvm-project/libunwind @DimitryAndric @emaste @bsdjhb
 /contrib/llvm-project/lldb @DimitryAndric @emaste
 /contrib/llvm-project/openmp @DimitryAndric @emaste
+/contrib/mandoc		@concussious
 /contrib/netbsd-tests	@ngie-eign
 /contrib/netbsd-tests/crypto/opencrypto/	@jmgurney
 /contrib/netbsd-tests/kernel/kqueue/	@jmgurney
@@ -65,6 +66,7 @@
 /sbin/nvmecontrol @bsdimp
 /sbin/veriexec/	@stephane-rochoy-stormshield
 /secure/usr.bin/openssl/	@juikim
+/share/man/		@concussious
 /share/mk	@bsdimp @bapt @bdrewery @emaste
 /stand		@bsdimp
 /stand/lua	@kevans91