MAINTAINERS: add @spageektti as a collaborator; CODEOWNERS: add Polish reviewer (#12779)

.github/CODEOWNERS

@@ -7,7 +7,7 @@
 /pages.it/ @mebeim @yutyo @Magrid0
 /pages.ko/ @IMHOJEONG
 /pages.nl/ @sebastiaanspeck @leonvsc @Waples
-/pages.pl/ @acuteenvy
+/pages.pl/ @acuteenvy @spageektti
 /pages.pt_BR/ @isaacvicente @vitorhcl
 /pages.pt_PT/ @waldyrious
 /pages.ta/ @kbdharun
@@ -33,7 +33,7 @@
 /contributing-guides/*.it.md @mebeim @yutyo @Magrid0
 /contributing-guides/*.ko.md @IMHOJEONG
 /contributing-guides/*.nl.md @sebastiaanspeck @leonvsc @Waples
-/contributing-guides/*.pl.md @acuteenvy
+/contributing-guides/*.pl.md @acuteenvy @spageektti
 /contributing-guides/*.pt_BR.md @isaacvicente @vitorhcl
 /contributing-guides/*.pt_PT.md @waldyrious
 /contributing-guides/*.ta.md @kbdharun