Correct the typo "wether" (#24032)

guide/english/algorithms/flood-fill/index.md

@@ -14,7 +14,7 @@ next.
 The problem is pretty simple and usually follows these steps:
 
   1. Take the position of the starting point.
-  2. Decide wether you want to go in 4 directions (**N, S, W, E**) or 8 directions (**N, S, W, E, NW, NE, SW, SE**).
+  2. Decide whether you want to go in 4 directions (**N, S, W, E**) or 8 directions (**N, S, W, E, NW, NE, SW, SE**).
   3. Choose a replacement color and a target color.
   4. Travel in those directions.
   5. If the tile you land on is a target, replace it with the chosen color.