add a comma in template config and document constructor for project listener (#1192)

minor fix in project listener related to config and documentation

Author: ankitsmt211

application/config.json.template

@@ -6,7 +6,7 @@
     "discordGuildInvite": "https://discord.com/invite/XXFUXzK",
     "modAuditLogChannelPattern": "mod-audit-log",
     "modMailChannelPattern": "modmail",
-    "projectsChannelPattern": "projects"
+    "projectsChannelPattern": "projects",
     "mutedRolePattern": "Muted",
     "heavyModerationRolePattern": "Moderator",
     "softModerationRolePattern": "Moderator|Community Ambassador",

application/src/main/java/org/togetherjava/tjbot/features/projects/ProjectsThreadCreatedListener.java

@@ -25,6 +25,12 @@ public final class ProjectsThreadCreatedListener extends ListenerAdapter impleme
         .expireAfterAccess(2, TimeUnit.of(ChronoUnit.MINUTES))
         .build();
 
+    /**
+     * Creates a new instance.
+     *
+     * @param config to work with the project related threads
+     */
+
     public ProjectsThreadCreatedListener(Config config) {
         configProjectsChannelPattern = config.getProjectsChannelPattern();
     }