correct_asnwers fixed column type

database/migrations/2025_11_11_154002_create_questions_table.php

@@ -20,7 +20,7 @@ return new class extends Migration
             $table->unsignedBigInteger('category_id')->nullable();
             $table->unsignedBigInteger('author_id')->nullable();
             $table->text('variants');
-            $table->text('correct_answers')->default('[]');
+            $table->json('correct_answers');
 
             $table->foreign('author_id')->references('id')->on('users')->onDelete('set null');
             $table->foreign('category_id')->references('id')->on('categories')->onDelete('set null');