Fix typo.

Author: handrews

jsonschema-hyperschema.xml

@@ -931,7 +931,7 @@
                             In the hyper-schema for the collection, the "item" link also demonstrates
                             the usage of "anchorPointer", as the context of that link must be the
                             entire collection, rather than the individual array element to which the
-                            links is attached.  The collection's self link also supports a
+                            link is attached.  The collection's self link also supports a
                             "submissionSchema" matching that of its "item" link's "targetSchema".
                         </postamble>
                     </figure>