Fix inconsistent channel parameters

toy-dataset_patchclamp_single-record-per-file/sub-20220101B/ephys/sub-20220101B_sample-cell003_channels.tsv

@@ -1,2 +1,2 @@
 channel_id	contact_id	gain	type	unit	samping_frequency	sampling_frequency_unit	channel_name	hardware_filters	recording_mode
-chan-02	con-02	50	WCP	mV	30000	Hz	whole cell patch	LP_filter_2	current clamp
+chan-02	con-02	15	CAT	mV	30000	Hz	cell attached patch	LP_filter_2	current clamp