Update README.md to fix cd sudoku_validation

One minor fix in the readme: 'cd sudoku_validationshould be changed tocd Sudoku_Validation` to match the package name.

Changed conda activate sudoku-validation to conda activate sudoku_validation.

Address peer review from Nour #67

Author: Maple018

README.md

@@ -95,14 +95,14 @@ the Sudoku Validation package.
 
 ```bash
 git clone https://github.com/UBC-MDS/Sudoku_Validation.git
-cd sudoku_validation
+cd Sudoku_Validation
 ```
 
 #### 2. Create an Environment Using Conda
 
 ```bash
 conda env create -f environment.yml
-conda activate sudoku-validation
+conda activate sudoku_validation
 ```
 
 #### 3. Install the package in Development Mode