fix: add id to LinkTypeSerializer

program/serializers.py

@@ -183,7 +183,7 @@ class CategorySerializer(serializers.ModelSerializer):
 class LinkTypeSerializer(serializers.ModelSerializer):
     class Meta:
         model = LinkType
-        fields = ("name", "type")
+        fields = ("id", "name", "type")
 
 
 class LicenseSerializer(serializers.ModelSerializer):