fix: correct typos

one_md_per_day_format/piscine/Week1/day3.md

@@ -238,7 +238,7 @@ df = pd.DataFrame(zip(dates, price),
                   columns=['Date','Company_A'])
 ```
 
-1. Using Plotly express, reproduce the plot in the image. As the data is generated randomly I do not expect you to reproduce the same line.
+1. Using **Plotly express**, reproduce the plot in the image. As the data is generated randomly I do not expect you to reproduce the same line.
 
 ![alt text][logo_ex6]
 

one_md_per_day_format/piscine/Week3/w3day02.md

@@ -1,4 +1,4 @@
-# D02  Piscine AI - Data Science 
+# W3D2  Piscine AI - Data Science 
 
 
 # Table of Contents:

one_md_per_day_format/piscine/Week3/w3day03.md

@@ -1,4 +1,4 @@
-# D02  Piscine AI - Data Science 
+# W3D2  Piscine AI - Data Science 
 
 
 # Table of Contents:

one_md_per_day_format/piscine/Week3/w3day1.md

@@ -1,10 +1,8 @@
-# W1D1  Piscine AI - Data Science 
+# W3D1  Piscine AI - Data Science 
 
 
 # Table of Contents:
 
-Reproduire cet article sans back prop 
-https://towardsdatascience.com/machine-learning-for-beginners-an-introduction-to-neural-networks-d49f22d238f9
 
 # Introduction