Apex trigger to Store File type Attachment in Document folder Whenever Article is updated

Trigger Create_Doc on Knowledge__kav (After insert) {

    list<id> ids = new list<id>();

    For(Knowledge__kav k : trigger.new)

    {

        ids.add (k.Id);

    }

    list<Knowledge__kav> recs = [select  Upload__Name__s, Upload__ContentType__s,     Upload__Length__s, Upload__Body__s from Knowledge__kav where id =: ids];

    for(Knowledge__kav k1 : recs)

    {

        Document doc = new Document();

        doc.Name = k1.Upload__Name__s;

        doc.FolderId = '00l2v000002hABpAAM';  // Document folder id

        doc.Body = k1.Upload__Body__s;

        doc.ContentType = k1.Upload__ContentType__s;

        doc.Type = k1.Upload__ContentType__s;      

        insert doc;

    

    }

}

  As I've created one article name "upload file3" with file type attachment "test.txt"

After Update this article file type attachment "text.txt" is inserted in document with folder public images

Thanks,
Lovesalesforceyes.