spelling: kyrtzidis

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

Author: jsoref

CODE_OWNERS.TXT

@@ -37,7 +37,7 @@ E: jgroff@apple.com
 G: jckarter
 D: SIL, SILGen, everything in Swift not covered by someone else
 
-N: Argyrios Kyrzidis
+N: Argyrios Kyrtzidis
 E: kyrtzidis@apple.com
 G: akyrtzi
 D: IDE, Index, SourceKit, swift-ide-test