get rid of waveform term

src/spikeinterface/widgets/base.py

@@ -139,7 +139,7 @@ def check_extensions(sorting_analyzer, extensions):
             if not sorting_analyzer.has_extension(extension):
                 raise_error = True
                 error_msg += (
-                    f"The {extension} waveform extension is required for this widget. "
+                    f"The {extension} sorting analyzer extension is required for this widget. "
                     f"Run the `sorting_analyzer.compute('{extension}', ...)` to compute it.\n"
                 )
         if raise_error: