[DOCS] Update RN note for PR 1822

Author: jrodewig

docs/src/reference/asciidoc/appendix/release-notes/7.17.0.adoc

@@ -32,5 +32,5 @@ https://github.com/elastic/elasticsearch-hadoop/pull/1478[#1478]
 * Correctly reading empty fields in as null rather than throwing exception
 https://github.com/elastic/elasticsearch-hadoop/pull/1816[#1816]
 
-* Fix `NullPointerException` bug for `es.read.fields.include`
+* Setting `es.read.fields.include` could throw a `NullPointerException` in older spark version
 https://github.com/elastic/elasticsearch-hadoop/pull/1822[#1822]