Fix typo.

Author: afoucret

x-pack/plugin/esql/src/internalClusterTest/java/org/elasticsearch/xpack/esql/action/LookupJoinTypesIT.java

@@ -319,7 +319,7 @@ private void testLookupJoinTypes(String group) {
         initIndexes(group);
         initData(group);
         for (TestConfig config : testConfigurations.get(group).configs.values()) {
-            if ((isValidDatType(config.mainType()) && isValidDatType(config.lookupType())) == false) {
+            if ((isValidDataType(config.mainType()) && isValidDataType(config.lookupType())) == false) {
                 continue;
             }
             String query = String.format(
@@ -577,7 +577,7 @@ public void testQuery(String query) {
         }
     }
 
-    private boolean isValidDatType(DataType dataType) {
+    private boolean isValidDataType(DataType dataType) {
         return UNDER_CONSTRUCTION.get(dataType) == null || UNDER_CONSTRUCTION.get(dataType).isEnabled();
     }
 }