Fixing typo in test error message (#40611)

x-pack/plugin/ccr/src/test/java/org/elasticsearch/xpack/ccr/action/TransportResumeFollowActionTests.java

@@ -238,7 +238,7 @@ public class TransportResumeFollowActionTests extends ESTestCase {
             if (setting.isDynamic()) {
                 boolean notReplicated = TransportResumeFollowAction.NON_REPLICATED_SETTINGS.contains(setting);
                 boolean replicated = replicatedSettings.contains(setting);
-                assertThat("setting [" + setting.getKey() + "] is not classified as replicated xor not replicated",
+                assertThat("setting [" + setting.getKey() + "] is not classified as replicated or not replicated",
                     notReplicated ^ replicated, is(true));
             }
         }