doc update

www/content/README.md

@@ -72,7 +72,7 @@ Several commonly used attribute description files are as follows:
 
 The directory can contain subdirectories and files, and the directory hierarchy supports up to 5 levels**.
 
-Use directories to **group** data, and put files in the same group in the same directory.
+Use directories to **group** data, and put files of a group in the same directory.
 
 Example (the letters **d** represent directories and the letters **f** represent files):
 ```

www/content/en/README.md

@@ -72,7 +72,7 @@ Several commonly used attribute description files are as follows:
 
 The directory can contain subdirectories and files, and the directory hierarchy supports up to 5 levels**.
 
-Use directories to **group** data, and put files in the same group in the same directory.
+Use directories to **group** data, and put files of a group in the same directory.
 
 Example (the letters **d** represent directories and the letters **f** represent files):
 ```