Fix cooldown setting message parsing - $ was not included in initial …

…setting default, changed substitutor to avoid migrating settings

main/src/main/java/net/citizensnpcs/trait/CommandTrait.java

@@ -626,7 +626,7 @@ public TimeVariableFormatter(long source, TimeUnit unit) {
 
         @Override
         public String apply(String t) {
-            return StrSubstitutor.replace(t, map);
+            return StrSubstitutor.replace(t, map, "{", "}");
         }
     }
 }