Fix GH-3241 by adding the missing parameter to the arrow function declaration

php/doc-en@74976cd

Author: zonuexe

language/functions.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- $Revision$ -->
-<!-- EN-Revision: f94d903985119d3ac00f4528551df947f57b667f Maintainer: takagi Status: ready -->
+<!-- EN-Revision: 74976cdb263ef841c5fc2c3f91ca7e284adce552 Maintainer: takagi Status: ready -->
 <!-- CREDITS: hirokawa,mumumu -->
  <chapter xml:id="language.functions" xmlns="http://docbook.org/ns/docbook">
   <title>関数</title>
@@ -1523,7 +1523,7 @@ var_export($fn(5)(10));
 <?php
 
 fn(array $x) => $x;
-static fn(): int => $x;
+static fn($x): int => $x;
 fn($x = 42) => $x;
 fn(&$x) => $x;
 fn&($x) => $x;