Replace the default separator format with MiniMessages format to ensu…

…re that the tag is properly closed.

eternalcore-core/src/main/java/com/eternalcode/core/configuration/implementation/PluginConfiguration.java

@@ -261,7 +261,7 @@ public Duration repairDelay() {
 
     @Contextual
     public static class Format {
-        public String separator = "&7, ";
+        public String separator = "<gray>,</gray> ";
     }
 
     @Bean