fix minor typo in comment

Author: sl4mmy

numpy/core/einsumfunc.py

@@ -987,7 +987,7 @@ def einsum_path(*operands, optimize='greedy', einsum_call=False):
 
 
 def _einsum_dispatcher(*operands, out=None, optimize=None, **kwargs):
-    # Arguably we dispatch on more arguments that we really should; see note in
+    # Arguably we dispatch on more arguments than we really should; see note in
     # _einsum_path_dispatcher for why.
     yield from operands
     yield out