BUG: fix info.dtypes(kind=tuple)

Author: ev-br

array_api_strict/_info.py

@@ -63,7 +63,7 @@ def dtypes(
         elif isinstance(kind, tuple):
             res: DataTypes = {}
             for k in kind:
-                res.update(self.dtypes(kind=kind, device=device))
+                res.update(self.dtypes(kind=k, device=device))
             return res
         raise ValueError(f"unsupported kind: {kind!r}")