Merge pull request #221 from 42-AI/quentin/42a-176-module03_ex03-colorfilterto_grayscale

fix: inconsistency on the exemple

Author: madvid

module03/subject/en.subject.tex

@@ -738,7 +738,7 @@ \section*{Examples}
 
 cf.to_grayscale(arr, 'm')
 
-cf.to_grayscale(arr, 'weighted', [0.2, 0.3, 0.5])
+cf.to_grayscale(arr, 'weight', weights = [0.2, 0.3, 0.5])
 \end{minted}
 
 \begin{figure}[h!]