Add missing type combinations for the operator to docs

Author: carlosdelest

x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/expression/function/fulltext/MatchOperatorTests.java

@@ -30,10 +30,12 @@ public MatchOperatorTests(@Name("TestCase") Supplier<TestCaseSupplier.TestCase>
 
     @ParametersFactory
     public static Iterable<Object[]> parameters() {
-        // Have a minimal test so that we can generate the docs
+        // Have a minimal test so that we can generate the appropriate types in the docs
         List<TestCaseSupplier> suppliers = new LinkedList<>();
         addPositiveTestCase(List.of(DataType.KEYWORD, DataType.KEYWORD), suppliers);
         addPositiveTestCase(List.of(DataType.TEXT, DataType.TEXT), suppliers);
+        addPositiveTestCase(List.of(DataType.KEYWORD, DataType.TEXT), suppliers);
+        addPositiveTestCase(List.of(DataType.TEXT, DataType.KEYWORD), suppliers);
         return parameterSuppliersFromTypedData(suppliers);
     }
 }