Update changelog

Author: markt-asf

webapps/docs/changelog.xml

@@ -249,6 +249,10 @@
         Use <code>Files</code> API to create temporary docBase when
         <code>antiLockingDocBase</code> is enabled. (markt)
       </fix>
+      <fix>
+        Improve validation of configuration when <code>DataSourceRealm</code>
+        starts. (remm)
+      </fix>
       <fix>
         <code>JAASRealm</code> should do a logout if login does not fail outright but
         does not produce a Principal. (remm)