MAINTAINERS: fix @tansiret username, add back to CODEOWNERS (#13463)

Signed-off-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

.github/CODEOWNERS

@@ -4,13 +4,14 @@
 /pages.fr/ @Nico385412 @nicokosi @noraj
 /pages.hi/ @kbdharun
 /pages.id/ @reinhart1010
-/pages.it/ @mebeim @Magrid0
+/pages.it/ @mebeim @tansiret @Magrid0
 /pages.ko/ @IMHOJEONG
 /pages.nl/ @sebastiaanspeck @leonvsc @Waples
 /pages.pl/ @acuteenvy @spageektti
 /pages.pt_BR/ @isaacvicente @vitorhcl
 /pages.pt_PT/ @waldyrious
 /pages.ta/ @kbdharun
+/pages.tr/ @tansiret
 /pages.zh/ @blueskyson @einverne
 /pages.zh_TW/ @blueskyson
 
@@ -31,12 +32,13 @@
 /contributing-guides/*.fr.md @Nico385412 @nicokosi @noraj
 /contributing-guides/*.hi.md @kbdharun
 /contributing-guides/*.id.md @reinhart1010
-/contributing-guides/*.it.md @mebeim @Magrid0
+/contributing-guides/*.it.md @mebeim @tansiret @Magrid0
 /contributing-guides/*.ko.md @IMHOJEONG
 /contributing-guides/*.nl.md @sebastiaanspeck @leonvsc @Waples
 /contributing-guides/*.pl.md @acuteenvy @spageektti
 /contributing-guides/*.pt_BR.md @isaacvicente @vitorhcl
 /contributing-guides/*.pt_PT.md @waldyrious
 /contributing-guides/*.ta.md @kbdharun
+/contributing-guides/*.tr.md @tansiret
 /contributing-guides/*.zh.md @blueskyson @einverne
 /contributing-guides/*.zh_TW.md @blueskyson