Tighten NEWS and UPGRADING entries for explode() error message

Author: Diego Sales

NEWS

@@ -181,7 +181,7 @@ PHP                                                                        NEWS
   . getenv() and putenv() now raises a ValueError when the first argument
     contains null bytes. (Weilin Du)
   . Improved explode() ValueError message when $separator is empty; suggests
-    using str_split() or mb_str_split(). (diegoasales)
+    str_split() or mb_str_split(). (diegoasales)
 
 - Streams:
   . Added so_keepalive, tcp_keepidle, tcp_keepintvl and tcp_keepcnt stream

UPGRADING

@@ -193,8 +193,8 @@ PHP 8.6 UPGRADE NOTES
     constants).
 
 - Standard:
-  . explode() ValueError message when $separator is empty now suggests using
-    str_split() or mb_str_split() to split a string into characters.
+  . explode() ValueError message when $separator is empty now suggests
+    str_split() or mb_str_split().
 
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 6. New Functions