Update jsonschema-core.xml

Co-authored-by: Ben Hutton <relequestual@gmail.com>

Author: gregsdennis

jsonschema-core.xml

@@ -1229,7 +1229,7 @@
                         this meta-schema with "$schema".  If the value is false, implementations
                         that do not recognize the vocabulary SHOULD proceed with processing
                         such schemas.  The value has no impact if the implementation
-                        recognizes the vocabulary.
+                        understands the vocabulary.
                     </t>
                     <t>
                         Per <xref target="extending" format="counter"></xref>, unrecognized