Update royal-society-of-chemistry.csl (#6328)

Add provision for the 'software' CSL type
Looks good, thanks!

royal-society-of-chemistry.csl

@@ -14,10 +14,14 @@
       <name>Ivan Bushmarinov</name>
       <email>ib@ineos.ac.ru</email>
     </contributor>
+    <contributor>
+      <name>Steven R. Kirk</name>
+      <email>steven.kirk@cantab.net</email>
+    </contributor>
     <category citation-format="numeric"/>
     <category field="chemistry"/>
     <summary>The Royal Society of Chemistry journal style.</summary>
-    <updated>2018-12-26T22:22:35+00:00</updated>
+    <updated>2022-12-05T05:15:00+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="editor">
@@ -176,6 +180,31 @@
             </group>
           </group>
         </else-if>
+        <else-if type="software" match="any">
+          <group delimiter=" ">
+            <text variable="title" form="short"/>
+            <group delimiter=" " prefix="(" suffix=")">
+              <label variable="version"/>
+              <text variable="version"/>
+            </group>
+            <choose>
+              <if variable="publisher">
+                <text macro="publisher"/>
+              </if>
+              <else>
+                <choose>
+                  <if variable="DOI">
+                    <text variable="DOI" prefix=", DOI:"/>
+                  </if>
+                  <else-if variable="URL">
+                    <text variable="URL" prefix=" "/>
+                  </else-if>
+                </choose>
+              </else>
+            </choose>
+            <text macro="issued"/>
+          </group>
+        </else-if>
         <else-if type="speech" match="any">
           <group delimiter=", ">
             <group delimiter=" ">