Update CODEOWNERS (#1680)

Co-authored-by: LocalStack Bot <localstack-bot@users.noreply.github.com>

Author: localstack-bot

CODEOWNERS

@@ -174,7 +174,7 @@
 /content/en/user-guide/aws/ram/ @viren-nadkarni
 
 # rds
-/content/en/user-guide/aws/rds/ @bentsku @steffyP
+/content/en/user-guide/aws/rds/ @bentsku @cloutierMat @steffyP
 
 # route53
 /content/en/user-guide/aws/route53/ @giograno