Update core.py

Author: observingClouds

slkspec/core.py

@@ -441,7 +441,7 @@ def ls(
             return detail_list
         return filelist.filename.tolist()
 
-    def _cat_file(self, path, start=None, end=None):
+    def cat_file(self, path, start=None, end=None):
         """Get file content
 
         Inputs