Fix a bug in templates/generic-get-set.liquid

Author: ddemidov

templates/generic-get-set.liquid

@@ -29,7 +29,7 @@ for prop in currentClass.systemProperties %}{%
 
     @{{prop_name}}.setter
     def {{ prop_name }}(self, value):
-        self._{{ prop_name }} = self.set_attr_{{ getter }}(self._{{ prop_name }}, '{{prop.systemName}}', value){%
+        self._{{ prop_name }} = self.set_attr_{{ setter }}(self._{{ prop_name }}, '{{prop.systemName}}', value){%
 endif%}{% unless forloop.last %}
 {% endunless %}{%
 endfor %}