Document correct @param name NativeNumberParameters

Jenkins for 'NativeNumberParams' unfortunately only on 6-1 bailed out with

/home/tdf/lode/jenkins/workspace/gerrit_windows@2/offapi/com/sun/star/i18n/XNativeNumberSupplier2.idl:57: warning: The following parameters of com::sun::star::i18n::XNativeNumberSupplier2::getNativeNumberStringParams([in] string NumberString, [in] ::com::sun::star::lang::Locale Locale, [in] short NativeNumberMode, [in] string NativeNumberParameters) are not documented:
  parameter 'NativeNumberParameters'

Change-Id: I3379e1bba5b79196c86410e0115d04eba49dc2a2

offapi/com/sun/star/i18n/XNativeNumberSupplier2.idl

@@ -51,7 +51,7 @@ interface XNativeNumberSupplier2 : ::com::sun::star::i18n::XNativeNumberSupplier
         @param Locale
             The locale.
 
-        @param NativeNumberParams
+        @param NativeNumberParameters
             The NatNum params (like "ordinal-digits" in [NatNum12 ordinal-digits]).
      */
     string getNativeNumberStringParams(