clarify "relative location" wording

keywordLocation does not always contain a relative location that actually
exists in a schema - because of reference navigation, its path contains
keywords from multiple locations

Author: karenetheridge

jsonschema-core.xml

@@ -2718,8 +2718,8 @@ https://example.com/schemas/common#/$defs/count/minimum
                         </artwork>
                     </figure>
                     <t>
-                        This information MAY be omitted only if either the relative location contains
-                        no references or if the schema does not declare an absolute URI as its "$id".
+                        This information MAY be omitted only if either the dynamic scope did not pass
+                        over a reference or if the schema does not declare an absolute URI as its "$id".
                     </t>
                     <t>
                         The JSON key for this information is "absoluteKeywordLocation".