Docs: Separate tags with commas in markdown docs

src/ejabberd_commands_doc.erl

@@ -400,7 +400,7 @@ gen_doc(#ejabberd_commands{name=Name, tags=Tags, desc=Desc, longdesc=LongDesc,
                                  [?TAG(dl, [gen_param(RName, Type, ResultDesc, HTMLOutput)])]
                            end
                      end,
-        TagsText = [?RAW("*`"++atom_to_list(Tag)++"`* ") || Tag <- Tags],
+        TagsText = ?RAW(string:join(["*`"++atom_to_list(Tag)++"`*" || Tag <- Tags], ", ")),
         IsDefinerMod = case Definer of
                          unknown -> false;
                          _ -> lists:member(gen_mod, proplists:get_value(behaviour, Definer:module_info(attributes)))