Update GetStart.md

docs/GetStart.md

@@ -6,13 +6,12 @@ This page provides basic usage about yolov5-obb. For installation instructions,
 
 **1. Prepare custom dataset files**
 
-1.1 Make sure the labels format is [poly classname diffcult], e.g., 
+1.1 Make sure the labels format is [poly classname diffcult], e.g., You can set **diffcult=0**
 ```
   x1      y1       x2        y2       x3       y3       x4       y4       classname     diffcult
 
 1686.0   1517.0   1695.0   1511.0   1711.0   1535.0   1700.0   1541.0   large-vehicle      1
 ```
-**(*Note: You can set **diffcult=0**)**
 ![image](https://user-images.githubusercontent.com/72599120/159213229-b7c2fc5c-b140-4f10-9af8-2cbc405b0cd3.png)
 
 
@@ -25,7 +24,6 @@ or Use the orignal dataset.
 ```shell
 cd yolov5_obb
 ```
-**(*Note: High resolution image dataset needs to be splited to get better performance in small objects)**
 
 1.3 Make sure your dataset structure same as:
 ```
@@ -48,7 +46,8 @@ parent
 ```
 
 **Note:**
-* DOTA is a high resolution image dataset, so it must be splited before training to get a better performance.
+* DOTA is a high resolution image dataset, so it needs to be splited before training/testing to get better performance.
+
 **2. Train**
 
 2.1 Train with specified GPUs. (for example with GPU=3)