fix delimiter issue for bioscience.csl (JabRef#4876)

https://forums.zotero.org/discussion/comment/358694/#Comment_358694

Author: POBrien333

bioscience.csl

@@ -14,7 +14,7 @@
     <category field="biology"/>
     <issn>0006-3568</issn>
     <eissn>1525-3244</eissn>
-    <updated>2020-03-30T09:19:37+00:00</updated>
+    <updated>2020-06-19T08:49:33+00:00</updated>
     <rights license="http://creativecommons.org/licenses/by-sa/3.0/">This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 License</rights>
   </info>
   <macro name="author">
@@ -148,11 +148,15 @@
           </group>
         </else-if>
         <else>
-          <group>
+          <group delimiter=". ">
             <text macro="title"/>
-            <text variable="container-title" suffix=" " form="long"/>
-            <text variable="volume" suffix=": "/>
-            <text variable="page"/>
+            <group delimiter=" ">
+              <text variable="container-title" form="long"/>
+              <group delimiter=": ">
+                <text variable="volume"/>
+                <text variable="page"/>
+              </group>
+            </group>
           </group>
         </else>
       </choose>