Update README.md

Author: JunguangJiang

README.md

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 <img src="https://github.com/thuml/Transfer-Learning-Library/blob/master/TransLearn.png"/>
 
 ## Introduction
-*TLLib* is an open-source and well-documented library for Transfer Learning. It is based on pure PyTorch with high performance and friendly API. Our code is pythonic, and the design is consistent with torchvision. You can easily develop new algorithms, or readily apply existing algorithms.
+*TLlib* is an open-source and well-documented library for Transfer Learning. It is based on pure PyTorch with high performance and friendly API. Our code is pythonic, and the design is consistent with torchvision. You can easily develop new algorithms, or readily apply existing algorithms.
 
 The currently supported algorithms include: