Revert erroneous docs change.

website/content/api-docs/secret/aws.mdx

@@ -665,9 +665,12 @@ to the configured `rotation_period`.
 <Note>
 
   Vault will create a new credential upon configuration, and if the maximum number of access keys already exist,
-  Vault will rotate the oldest one. Vault must do this to know the credential.
+  Vault will rotate the oldest one. Vault must do this to know the credential. At each rotation period, Vault will
+  continue to prioritize rotating the oldest-existing credential.
 
-  At each rotation, Vault will rotate the oldest existing credential.
+  For example, if an IAM User has no access keys when onboarded into Vault, then Vault will generate its first access
+  key for the user. On the first rotation, Vault will generate a second access key for the user. It is only upon the
+  next rotation cycle that the first access key will now be rotated.
 
 </Note>