fix(build): missing param

Author: julionc

reference/mongodb/mongodb/driver/clientencryption/encryptexpression.xml

@@ -13,7 +13,7 @@
    <modifier>final</modifier> <modifier>public</modifier> <type>object</type><methodname>MongoDB\Driver\ClientEncryption::encryptExpression</methodname>
    <methodparam><type class="union"><type>array</type><type>object</type></type><parameter>expr</parameter></methodparam>
    <methodparam choice="opt"><type class="union"><type>array</type><type>null</type></type><parameter>options</parameter><initializer>&null;</initializer></methodparam>
-  </methodynopsis>
+  </methodsynopsis>
   <simpara>
    Cifra una expresión de coincidencia o agregación para consultar un índice de rango.
   </simpara>