HPCC-14856 Edits made from review

Signed-off-by: Jim DeFabia <jamesdefabia@lexisnexis.com>

docs/ECLLanguageReference/ECLR_mods/WkFlo-PERSIST.xml

@@ -125,7 +125,9 @@
 
             <entry>A boolean value indicating whether to rebuild the PERSIST.
             When set to FALSE, the PERSIST rebuilds ONLY if the underlying
-            file does not exist. </entry>
+            file does not exist. If your PERSIST layout has changed and you
+            specify REFRESH(FALSE) the mismatch could cause your job to
+            fail.</entry>
           </row>
 
           <row>