Fix the value error typo of AdamW's betas' valid values checking (#14780)

* Fix the value error typo of AdamW's betas value check

* error fixed

src/transformers/optimization.py

@@ -302,9 +302,9 @@ class AdamW(Optimizer):
         if lr < 0.0:
             raise ValueError(f"Invalid learning rate: {lr} - should be >= 0.0")
         if not 0.0 <= betas[0] < 1.0:
-            raise ValueError(f"Invalid beta parameter: {betas[0]} - should be in [0.0, 1.0[")
+            raise ValueError(f"Invalid beta parameter: {betas[0]} - should be in [0.0, 1.0)")
         if not 0.0 <= betas[1] < 1.0:
-            raise ValueError(f"Invalid beta parameter: {betas[1]} - should be in [0.0, 1.0[")
+            raise ValueError(f"Invalid beta parameter: {betas[1]} - should be in [0.0, 1.0)")
         if not 0.0 <= eps:
             raise ValueError(f"Invalid epsilon value: {eps} - should be >= 0.0")
         defaults = dict(lr=lr, betas=betas, eps=eps, weight_decay=weight_decay, correct_bias=correct_bias)