Update README.md

README.md

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 ### Dataset Summary
 
-831 Hours–Mobile Telephony British English Speech Data, which is recorded by 1651 native British speakers. The recording contents cover many categories such as generic, interactive, in-car and smart home. The texts are manually proofreaded to ensure a high accuracy rate. The database matchs the Android system and IOS.
+This dataset is just a sample of 831 Hours–Mobile Telephony British English Speech dataset(paid dataset), which is recorded by 1651 native British speakers. The recording contents cover many categories such as generic, interactive, in-car and smart home. The texts are manually proofreaded to ensure a high accuracy rate. The database matchs the Android system and IOS.
                                                                                                                                 
-For more details, please refer to the link: https://www.nexdata.ai/datasets/speechrecog/950?source=Huggingface
+ For more details & to download the rest of the dataset(paid),please refer to the link: https://www.nexdata.ai/datasets/speechrecog/950?source=Huggingface
 
 
 ### Supported Tasks and Leaderboards