CODEOWNERS: add @emmanuel-ferdman as Russian translation maintainer (#20448)

.github/CODEOWNERS

@@ -12,7 +12,7 @@
 /pages.nl/ @sebastiaanspeck @leonvsc @Waples @dmmqz
 /pages.pl/ @acuteenvy @spageektti
 /pages.pt_BR/ @isaacvicente @renie
-/pages.ru/ @ivanbaluta
+/pages.ru/ @ivanbaluta @emmanuel-ferdman
 /pages.ta/ @kbdharun
 /pages.tr/ @tansiret
 /pages.zh/ @blueskyson @einverne @DustMerlin @zhb4
@@ -41,7 +41,7 @@
 /contributing-guides/*.nl.md @sebastiaanspeck @leonvsc @Waples @dmmqz
 /contributing-guides/*.pl.md @acuteenvy @spageektti
 /contributing-guides/*.pt_BR.md @isaacvicente @renie
-/contributing-guides/*.ru.md @ivanbaluta
+/contributing-guides/*.ru.md @ivanbaluta @emmanuel-ferdman
 /contributing-guides/*.ta.md @kbdharun
 /contributing-guides/*.tr.md @tansiret
 /contributing-guides/*.zh.md @blueskyson @einverne