Reword saving-worlds info a bit

Author: TBlueF

implementations/paper/src/main/java/de/bluecolored/bluemap/bukkit/BukkitPlugin.java

@@ -97,7 +97,7 @@ public void onEnable() {
 
         //save world so the level.dat is present on new worlds
         if (!FoliaSupport.IS_FOLIA) {
-            Logger.global.logInfo("Saving all worlds once, to make sure the level.dat is present...");
+            Logger.global.logInfo("Saving all worlds once, to make sure all required world-properties are present...");
             for (World world : getServer().getWorlds()) {
                 world.save();
             }

implementations/spigot/src/main/java/de/bluecolored/bluemap/bukkit/BukkitPlugin.java

@@ -119,7 +119,7 @@ public BukkitPlugin() {
     public void onEnable() {
 
         //save world so the level.dat is present on new worlds
-        Logger.global.logInfo("Saving all worlds once, to make sure the level.dat is present...");
+        Logger.global.logInfo("Saving all worlds once, to make sure all required world-properties are present...");
         for (World world : getServer().getWorlds()) {
             world.save();
         }