Fix links to incident response

Fixes #cleanup

Signed-off-by: Chris Palmer <cpalmer@tailscale.com>

README.md

@@ -19,7 +19,8 @@ This repository includes:
 * [Risk assessment policy](/risk-assessment/index.md)
 * [Information classification policy](/information-classification/index.md)
 * [Third party vendor review policy](/vendor/index.md)
-* [Incident response policy](/incident-response/index.md)
+* [Incident response policy](/incident-response-policy/index.md)
+* [Incident response process](/incident-response-process/index.md)
 * [BCP/DR policy](/bcp-dr/index.md)
 * [Access control policy](/access-control/index.md)
 * [Password policy](/password/index.md)