[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

src/spikeinterface/core/basesorting.py

@@ -288,7 +288,7 @@ def count_num_spikes_per_unit(self, outputs="dict"):
 
         # speed strategy by order
         # 1. if _cached_spike_trains have all units then use it
-        # 2. if _cached_spike_vector is not non use it
+        # 2. if _cached_spike_vector is not non use it
         # 3. loop with get_unit_spike_train
 
         # check if all spiketrains are cached
@@ -313,7 +313,6 @@ def count_num_spikes_per_unit(self, outputs="dict"):
             unit_indices, counts = np.unique(spike_vector["unit_index"], return_counts=True)
             num_spikes[unit_indices] = counts
 
-
         if outputs == "array":
             return num_spikes
         elif outputs == "dict":