Apply suggestions from code review

Co-authored-by: Thomas Fossati <[email protected]>

draft-ietf-rats-corim.md

@@ -2140,7 +2140,7 @@ ECT authority is represented by cryptographic keys. Authority
 is asserted by digitally signing a Claim using the key. Hence, Claims are
 added to the ACS under the authority of a cryptographic key.
 
-Each Claim is encoded as an ECT. The `environment-map`, the `mkey`, and a
+Each Claim is encoded as an ECT. The `environment-map`, the `mkey` or `element-id`, and a
 key within `measurement-values-map` encode the name of the Claim.
 The value matching that key within `measurement-values-map` is the actual
 state of the Claim.