Update movement/validators/files.py

Co-authored-by: Niko Sirmpilatze <[email protected]>

movement/validators/files.py

@@ -223,7 +223,7 @@ def _file_contains_expected_levels(self, attribute, value):
 
 @define
 class ValidAniposeCSV:
-    """Class for validating Anipose-style .csv files.
+    """Class for validating Anipose-style 3D pose .csv files.
 
     The validator ensures that the file contains the
     expected index column levels.