docs: Update phrasing for lead in sentence

website/content/docs/concepts/domain-model/credential-stores.mdx

@@ -15,7 +15,7 @@ It belongs to a [project][] and supports the
 by providing mechanisms to limit the [credentials][] it can access
 to the minimum necessary for the project it is in.
 
-Credential stores either generate or store credentials, depending on the type:
+Credential stores contain either credential libraries or credentials, depending on the type:
 
 - Vault credential stores contain [credential libraries][].
    Targets use credential libraries to issue credentials for sessions.