fix: economical JSON

src/main/java/su/xserver/iikocon/MainVerticle.java

@@ -649,7 +649,7 @@ public class MainVerticle extends AbstractVerticle {
       rc.response()
         .putHeader("Content-Type", "application/json")
         .putHeader("Content-Disposition", "attachment; filename=olap_export.json")
-        .end(fullJson.encodePrettily());
+        .end(fullJson.encode());
     });
 
     return router;

src/main/java/su/xserver/iikocon/iiko/IikoHandler.java

@@ -41,7 +41,7 @@ public class IikoHandler {
     getAllFieldsWithReportAndTags()
       .onSuccess(ar -> ctx.response()
         .putHeader("Content-Type", "application/json")
-        .end(ar.encodePrettily()))
+        .end(ar.encode()))
       .onFailure(err -> ctx.response()
         .setStatusCode(500)
         .end(err.getMessage()));