Fix some typos

Author: handrews

jsonschema-core.xml

@@ -150,7 +150,7 @@
                         or more schemas in a way defined by the keyword.
                     </t>
                     <t>
-                        Applicator keywords also define how subschema booolean
+                        Applicator keywords also define how subschema boolean
                         <xref target="assertions">assertion</xref>
                         results are modified and/or combined to produce the boolean result
                         of the applicator.  Applicators may apply any boolean logic operation
@@ -176,7 +176,7 @@
                     <t>
                         An instance can only fail an assertion that is present in the schema.
                         In some cases, this no-op behavior is identical to a keyword that exists with
-                        certain values, and keyword defintions SHOULD note such values where known.
+                        certain values, and keyword definitions SHOULD note such values where known.
                         These default behaviors MUST NOT result in assertion failures.
                     </t>
                     <section title="Assertions and Instance Primitive Types">