fix: Align max_wait definitions in EstimaorBase and Estimator (#3009)

Co-authored-by: Mohamed Ali Jamaoui <[email protected]>

Author: mohamed-ali

src/sagemaker/estimator.py

@@ -2116,9 +2116,9 @@ def __init__(
                 https://docs.aws.amazon.com/sagemaker/latest/dg/model-managed-spot-training.html
                 (default: ``False``).
             max_wait (int): Timeout in seconds waiting for spot training
-                instances (default: None). After this amount of time Amazon
-                SageMaker will stop waiting for Spot instances to become
-                available (default: None).
+                job (default: None). After this amount of time Amazon
+                SageMaker will stop waiting for managed spot training job to
+                complete (default: None).
             checkpoint_s3_uri (str): The S3 URI in which to persist checkpoints
                 that the algorithm persists (if any) during training. (default:
                 None).