Replace "Repository Policy" with "Member Privledges" (#52255)

Co-authored-by: Felicity Chapman <felicitymay@github.com>

data/reusables/enterprise-accounts/repositories-tab.md

@@ -1 +1 @@
-1. Under "{% octicon "law" aria-hidden="true" %} Policies", click **Repositories**.
+1. Under "{% octicon "law" aria-hidden="true" %} Policies", click **Member privileges**.