Update association-for-computing-machinery.csl (#4459)

add genre for thesis.
Via https://forums.zotero.org/discussion/comment/345228/#Comment_345228

Author: POBrien333

association-for-computing-machinery.csl

@@ -13,7 +13,7 @@
     </author>
     <category citation-format="numeric"/>
     <category field="engineering"/>
-    <updated>2019-12-17T16:30:44+00:00</updated>
+    <updated>2019-12-18T11:27:24+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">
@@ -125,7 +125,7 @@
       </group>
       <group suffix=".">
         <choose>
-          <if type="bill book graphic legal_case legislation motion_picture report song thesis" match="any">
+          <if type="bill book graphic legal_case legislation motion_picture report song" match="any">
             <text macro="book-publisher" suffix="."/>
           </if>
           <else-if type="paper-conference">
@@ -181,6 +181,12 @@
               <text variable="page"/>
             </group>
           </else-if>
+          <else-if type="thesis" match="any">
+            <group delimiter=". ">
+              <text variable="genre"/>
+              <text macro="book-publisher"/>
+            </group>
+          </else-if>
           <else>
             <group suffix="." delimiter=", ">
               <group delimiter=" " font-style="italic">