modified README.md

Author: bo-10000

README.md

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 summary (KOR): https://bo-10000.tistory.com/133
 
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 - `resnet3d101D`
 - `resnet3d152D`
 
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 ## How to use
 ```
 #2D models
@@ -45,6 +49,8 @@ from resnetD_3d import *
 model = resnet3d50D()
 ```
 
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 ## Model parameters
 - `in_channels (int, defauult=3)`: input channel dimension
 - `num_classes (int, default=1000)`: number of class labels