Translate 3 LNC articles into Vietnamese

Translator: @ToniTran - 108$ ~ 95 NEAR. NEAR at 1.13 (as of Sept 7/2023)
Reviewer/Editor: @cuongdcdev - 25$ ~ 22 NEAR

Total: 2170 words

What is Ref finance - 1400 words

Original:What is Ref finance
Translated: Ref Finance là gì? Hướng dẫn sử dụng Ref Finance

NEAR Data Flow - 670 words

Original: NEAR Data Flow

Translated: Luồng dữ liệu trên NEAR hoạt động như thế nào?

How to Burrow: A Step-by-Step User Guide - 1100 words

Original Post: How to Burrow: A Step-by-Step User Guide

Tranlated: How to Burrow: A Step-by-Step User Guide