Document XSLTProcessor::setParameter() quote fix (#4038)

Author: nielsdos

reference/xsl/xsltprocessor/setparameter.xml

@@ -69,6 +69,30 @@
    &return.success;
   </para>
  </refsect1>
+
+ <refsect1 role="changelog">
+  &reftitle.changelog;
+  <informaltable>
+   <tgroup cols="2">
+    <thead>
+     <row>
+      <entry>&Version;</entry>
+      <entry>&Description;</entry>
+     </row>
+    </thead>
+    <tbody>
+     <row>
+      <entry>8.4.0</entry>
+      <entry>
+       It is now possible to set a parameter value containing both single and
+       double quotes. Prior to PHP 8.4.0, this resulted in a warning.
+      </entry>
+     </row>
+    </tbody>
+   </tgroup>
+  </informaltable>
+ </refsect1>
+
  <refsect1 role="examples">
   &reftitle.examples;
   <para>