Update string formatting

Author: kabilar

element_array_ephys/ephys_chronic.py

@@ -170,7 +170,7 @@ def make(self, key):
                     break
             else:
                 raise FileNotFoundError(
-                    'No SpikeGLX data found for probe insertion: {}'.format(key)
+                    f'No SpikeGLX data found for probe insertion: {key}' + 
                     ' The probe serial number does not match.')
 
             if re.search('(1.0|2.0)', spikeglx_meta.probe_model):