Add example8 bipolar and minor correction

Author: neuromechanist

emg_examples/sub-s8concurrentIndepndentUnits/emg/sub-s8concurrentIndepndentUnits_task-jumping_acq-bipolar_channels.json

@@ -0,0 +1,8 @@
+{
+"Coordsystem": {
+    "thigh-coordsystem":{ 
+        "EMGCoordinateUnits": "percent",
+        "EMGCoordinateSystemDescription": "X: FME → FLE; Y: Popliteal Fossa → Patellar Anterior Surface; Z: midpoint FME-FLE → Greater Trochanter; Femur Medial Epicondyle (FME); Femur Lateral Epicondyle (FLE); Patellar Anterior Surface; Back of the knee (Popliteal Fossa)"
+    }
+}
+}

emg_examples/sub-s8concurrentIndepndentUnits/emg/sub-s8concurrentIndepndentUnits_task-jumping_acq-bipolar_channels.tsv

@@ -0,0 +1,2 @@
+name	type	units	target_muscle	interelectrode_distance	placement	loc_reference
+EMG1	emg	V	Tibilias Anterior	20 mm	[50,100,80]	thigh-coordsystem 

emg_examples/sub-s8concurrentIndepndentUnits/emg/sub-s8concurrentIndepndentUnits_task-jumping_acq-bipolar_emg.json

@@ -0,0 +1,17 @@
+{
+	"EMGChannelCount":1,
+	"EMGPlacementScheme":"The bipolar electrode was palced on Retus Femoris according to SENIAM.",
+	"EMGReference":"bipolar",
+	"EMGGround":"n/a",
+    "EMGElectrodeCount":4,
+    "ElectrodeMaterial":"Ag/AgCl",
+	"Manufacturer":"Delsys",
+	"ManufacturersModelName":"Trigno",
+    "AmpifierType":"Wireless",
+	"RecordingDuration":1.00,
+	"SamplingFrequency":2000,
+    "HardwareFilters":"loawpass at 500 Hz",
+	"TaskDescription":"Subject performs single-leg jumping for 30 seconds.",
+	"TaskName":"jumpings",
+	"TriggerChannelCount":0
+}

emg_examples/sub-s8concurrentIndepndentUnits/emg/sub-s8concurrentIndepndentUnits_task-jumping_acq-highDensity_channles.json

@@ -12,7 +12,7 @@
 	"RecordingDuration":1.00,
 	"SamplingFrequency":2000,
     "HardwareFilters":"n/a",
-	"TaskDescription":"Subject performed isometric finger press tasks with multiple combinations of fingers.",
-	"TaskName":"isometric",
+	"TaskDescription":"Subject performs single-leg jumping for 30 seconds.",
+	"TaskName":"jumping",
 	"TriggerChannelCount":0
 }