Update hochschule-fur-soziale-arbeit-fhnw.csl (JabRef#4533)

Disambiguate citations with same first author but different second authors by adding names instead of year suffixes to avoid:
- Ludwig-Mayerhofer, Wolfgang/Behrend, Olaf/Sondermann, Ariadne (Hg.) (2007a). Fallverstehen und Deutungsmacht. etc.
- Ludwig-Mayerhofer, Wolfgang/Dölemeyer, Anne/Sondermann, Ariadne (2007b). Die neue Staatlichkeit: etc.

hochschule-fur-soziale-arbeit-fhnw.csl

@@ -206,7 +206,7 @@
     </choose>
   </macro>
   <!--Layout der In-Line-Zitation -->
-  <citation disambiguate-add-year-suffix="true">
+  <citation disambiguate-add-year-suffix="true" disambiguate-add-names="true">
     <layout prefix="(" suffix=")" delimiter=", ">
       <choose>
         <if position="ibid-with-locator">