Update b-INPUT-VALIDATION.md

b-INPUT-VALIDATION.md

@@ -11,8 +11,8 @@ For the forthcoming feature **input validation**,  you need to ensure that the i
 - Create a feature `b_input_validation` branch:
 
 ```bash
-git checkout develop
 git pull origin develop
+git checkout develop
 git checkout -b b_input_validation
 ```
 
@@ -181,4 +181,4 @@ if __name__ == '__main__':
 
 ## Approve a merge request
 
-## Merge `b_input_validation` into `develop`
\ No newline at end of file
+## Merge `b_input_validation` into `develop`