modified: part1/simple_detector.md

src/docs/part1/simple_detector.md

@@ -64,7 +64,7 @@ Examine the compact description, specifically this part:
 checkOverlaps -t 0.0001 -c gem_tracker.xml
 ```
 
-```
+```bash
 ...
 Info in <TGeoNodeMatrix::CheckOverlaps>: Checking overlaps for world_volume and daughters within 0.0001
 Check overlaps:      [==========]   11 [100.00 %]           00:00