docs: Add migration-to-aws plugin team ownership to CODEOWNERS

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

Author: icarthick

.github/CODEOWNERS

@@ -31,7 +31,7 @@ tools/                    @awslabs/agent-plugins-admins
 ## Plugins (alphabetically listed)
 
 plugins/deploy-on-aws        @awslabs/agent-plugins-admins @awslabs/agent-plugins-maintainers  @awslabs/agent-plugins-deploy-on-aws
-plugins/migration-to-aws     @awslabs/agent-plugins-admins @awslabs/agent-plugins-maintainers  @awslabs/agent-plugins-migration-to-aws
+plugins/migration-to-aws     @awslabs/agent-plugins-admins @awslabs/agent-plugins-maintainers  @awslabs/agent-plugins-migrate-to-aws
 
 ## File must end with CODEOWNERS file