Update base.py

Fixed comment line too long.

phy/apps/base.py

@@ -1312,7 +1312,8 @@ def _amplitude_getter(self, cluster_ids, name=None, load_all=False):
         channel_id = channel_ids[0]
         # All clusters appearing on the first cluster's peak channel.
         other_clusters = self.get_clusters_on_channel(channel_id)
-        # Remove slected clusters from other_clusters to prevent them from being included in grey dots/histogram
+        # Remove selected clusters from other_clusters to prevent them from being included
+        #  in both the grey dots and grey histogram
         other_clusters = [e for e in other_clusters if e not in cluster_ids]
         # Get the amplitude method.
         f = self._get_amplitude_functions()[name]