docs(linear-regression-with-scikit-learn): fix audits format

subjects/ai/linear-regression/audit/README.md

@@ -169,23 +169,24 @@ y_test:
 ###### For question 4, is the mse on the **train set** `2888.326888` and the mse on the **test set** `2858.255153`?
 
 ---
+
 ---
 
 #### Exercise 5: Gradient Descent (Optional)
 
 ##### The exercise is validated if all questions of the exercise are validated.
 
-###### +The question 1 is validated if the outputted plot looks like:
+###### +For question 1, does the outputted plot looks like?
 
 ![alt text][ex5q1]
 
 [ex5q1]: ../w2_day1_ex5_q1.png "Scatter plot "
 
-###### +The question 2 is validated if the output is: `11808.867339751561`
+###### +For question 2, is the output `11808.867339751561`?
 
-###### +The question 3 is validated if `grid.shape` is `(640000,2)`.
+###### +For question 3, is `grid.shape` equal to `(640000,2)`?
 
-###### +The question 4 is validated if the 10 first values of losses are:
+###### +For question 4, are the 10 first values of losses the following?
 
 ```console
 array([158315.41493175, 158001.96852692, 157689.02212209, 157376.57571726,
@@ -193,29 +194,30 @@ array([158315.41493175, 158001.96852692, 157689.02212209, 157376.57571726,
     155821.84369312, 155512.39728829])
 ```
 
-###### +The question 5 is validated if the outputted plot looks like
+###### +For question 5, does the outputted plot look like the following?
 
 ![alt text][ex5q5]
 
 [ex5q5]: ../w2_day1_ex5_q5.png "MSE"
 
-###### +The question 6 is validated if the point returned is:
+###### +For question 6, is the point returned the following?
+
 `array([42.5, 99. ])`. It means that `a= 42.5` and `b=99`.
 
-###### +The question 7 is validated if the coefficients returned are:
+###### +For question 7, are the coefficients returned the following?
 
 ```console
 Coefficients (a): 42.61943031121358
 Intercept (b): 99.18581814447936
 ```
 
-###### +The question 8 is validated if the outputted plot is:
+###### +For question 8, is the outputted plot the following?
 
 ![alt text][ex5q8]
 
 [ex5q8]: ../w2_day1_ex5_q8.png "MSE + Gradient descent"
 
-###### +The question 9 is validated if the coefficients and intercept returned are:
+###### +For question 9, are the coefficients and intercept returned the following?
 
 ```console
 Coefficients:  [42.61943029]