Edit README.md

Author: CoodingPenguin

README.md

@@ -6,7 +6,7 @@ edwith에서 제공하는 [파이토치 부스트코스 강의](https://www.edwi
 
 - [x] Lab-01-1 Tensor Manipulation 1
 - [x] Lab-01-2 Tensor Manipulation 2
-- [ ] Lab-02 Linear regression
+- [x] Lab-02 Linear regression
 - [ ] Lab-03 Deeper Look at GD
 - [ ] Lab-04-1 Multivariable Linear regression
 - [ ] Lab-04-2 Loading Data