fix test

Author: jan-elastic

x-pack/plugin/esql/qa/server/src/main/java/org/elasticsearch/xpack/esql/qa/rest/RestEsqlTestCase.java

@@ -794,7 +794,7 @@ public void testNamedParamsForIdentifierAndIdentifierPatterns() throws IOExcepti
             error = re.getMessage();
             assertThat(error, containsString("ParsingException"));
             assertThat(error, containsString("line 1:23: mismatched input '?cmd' expecting {"));
-            assertThat(error, containsString("'dissect', 'eval', 'grok', 'limit', 'sort'"));
+            assertThat(error, containsString("'dissect', 'eval', 'grok', 'limit', 'sample', 'sort'"));
         }
     }