Bugfix

Author: julian-elastic

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/expression/function/aggregate/Percentile.java

@@ -174,7 +174,7 @@ private int percentileValue() {
             return ((Number) literal.value()).intValue();
         }
         throw new EsqlIllegalArgumentException(
-            format(null, "Percentile value must be a constant integer in [{}], found [{}]", source(), percentile)
+            format(null, "Percentile value must be a constant number in [{}], found [{}]", source(), percentile)
         );
     }