move citation number outside first field (#5499)

In the bibliography layout, citation-number was inside the first group (field). This made second-field-align="flush" mess up the layout.

Author: JohannesNE

acta-anaesthesiologica-scandinavica.csl

@@ -155,8 +155,8 @@
   </citation>
   <bibliography second-field-align="flush">
     <layout>
+      <text variable="citation-number" suffix=". "/>
       <group delimiter=". " suffix=". ">
-        <text variable="citation-number"/>
         <text macro="author"/>
         <text macro="title"/>
       </group>