Update README.md

README.md

@@ -31,6 +31,7 @@ huggingface-cli download --repo-type dataset --resume-download FastUMIPro/exampl
 ## Data Structure
 FastUMI PRO uses raw format containing various types of raw sensor data, which can be easily converted to other formats. The raw format facilitates querying and validating original sensor outputs for rapid problem identification.
 
+```plaintext
 DATA/
 └── device_label_xv_serial/
     └── session_timestamp/
@@ -55,6 +56,7 @@ DATA/
         └── Merged_Trajectory/
             ├── merged_trajectory.txt
             └── merge_stats.txt
+```
 
 ### Directory Descriptions
 session_xxx: Individual data collection session