Fix a typo: arrangments -> arrangements

Author: hkosova

jsonschema-core.xml

@@ -1828,7 +1828,7 @@
                     </figure>
                     <t>
                         Note also that "https://example.com/foo#/items" is valid in both
-                        arrangments, but resolves to a different value.  This URI ends up
+                        arrangements, but resolves to a different value.  This URI ends up
                         functioning similarly to a retrieval URI for a resource.  While valid,
                         examining the resolved value and either using the "$id" (if the value
                         is a subschema), or resolving the reference and using the "$id" of the