fix Issue rougier#101

Author: 410063005

100_Numpy_exercises_with_hints_with_solutions.md

@@ -72,7 +72,7 @@ print(Z)
 `hint: reshape`
 
 ```python
-nz = np.nonzero([1,2,0,0,4,0])
+nz = np.arange(0,9).reshape(3,3)
 print(nz)
 ```
 #### 10. Find indices of non-zero elements from [1,2,0,0,4,0] (★☆☆)