Fix typo

Change-Id: Ic8643301cddebe6f62178e7611f2ebe22beddf0b
Reviewed-on: https://gerrit.libreoffice.org/72932
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>

extensions/source/ole/unoobjw.cxx

@@ -1273,7 +1273,7 @@ STDMETHODIMP InterfaceOleWrapper::GetIDsOfNames(REFIID /*riid*/,
 // in order to figure out what the an IDispatch parameter is meant for.
 
 // Normal JScript object parameter can be mixed with JScriptValue object. If an
-// VARIANT contains an VT_DISPATCH that is no JScriptValue than the type information
+// VARIANT contains a VT_DISPATCH that is no JScriptValue than the type information
 // is used to find out about the required type.
 void InterfaceOleWrapper::convertDispparamsArgs(DISPID id,
     unsigned short /*wFlags*/, DISPPARAMS* pdispparams, Sequence<Any>& rSeq)