security docs: update capitalization of PSC

This is a nitpick, but I have picked it.

Author: rjbs

SECURITY.md

@@ -12,7 +12,7 @@ membership mailing list monitored by the Perl security team.
 
 You should receive an initial response to your report within 72 hours.
 If you do not receive a response in that time, please contact
-the [Perl steering council](mailto:[email protected]).
+the [Perl Steering Council](mailto:[email protected]).
 
 When members of the security team reply to your messages, they will
 generally include the [email protected] address in the "To" or "CC"

pod/perlsecpolicy.pod

@@ -29,7 +29,7 @@ security team.
 
 You should receive an initial response to your report within 72 hours.
 If you do not receive a response in that time, please contact
-the L<Perl steering council|mailto:[email protected]>.
+the L<Perl Steering Council|mailto:[email protected]>.
 
 When members of the security team reply to your messages, they will
 generally include the [email protected] address in the "To" or "CC"
@@ -296,7 +296,7 @@ open and transparent as possible about the state of your security report.
 New vulnerability reports will receive an initial reply within 72 hours
 from the time they arrive at the security team's mailing list. If you do
 not receive any response in that time, contact the
-L<Perl steering council|mailto:[email protected]>.
+L<Perl Steering Council|mailto:[email protected]>.
 
 The initial response sent by the security team will confirm your message was
 received and provide an estimated time frame for the security team's