Update README.md

README.md

@@ -151,4 +151,4 @@ Width and height are the positive integers. This transform resizes the entire im
 #### --crop x y width height
 x, y, Width and height are the positive integers. This transform cuts the given rectangular area from the given image. The specified rect must not exceed the image, otherwise you'll get an error.
 ### Tests
-acmb is provided with a bunch of unit tests. If you want to run them please set the environment variable ACMB_PATH="/path/to/acmb/. It must store the location oh the main acmb directory (where you have downloaded it). Also you need to download the set of test files. It is too large to store it in GitHub, you can download it from Google Drive https://drive.google.com/file/d/1whnWlp1ww4q_VxdOZxBYbZuihow6O_T3/view?usp=sharing. Unzip it and place into the "Tests" folder
+acmb is provided with a bunch of unit tests. If you want to run them please make sure that the environment variable ACMB_PATH="/path/to/acmb/" is set correctly. It must store the location of the main acmb directory (where you have downloaded it). Also you need to download the set of test files. It is too large to store it in GitHub, you can download it from [Google Drive](https://drive.google.com/uc?id=1hrBIlS_2S1OIFY_M6mOqbnduOlWUAc7A) . Unzip it and place into the "Tests" folder. If you work in Linux yyou can run script download-test-files.sh in Tests folder.