Minor fix to Tracking4D readme

ae43adf2 · Morag Jean Williams · 8a81a1a1 · ae43adf2
Commit ae43adf2 authored Dec 10, 2019 by Morag Jean Williams
--- a/src/modules/Tracking4D/README.md
+++ b/src/modules/Tracking4D/README.md
@@ -34,7 +34,7 @@ For each detector, the following plots are produced:
 ```toml
 [Tracking4D]
 min_hits_on_track = 4
-spatial_cut_abs = 300um
+spatial_cut_abs = 300um, 300um
 time_cut_abs = 200ns
 exclude_dut = true
 require_detectors = "ExampleDetector_0", "ExampleDetector_1"