Update README.md

Author: CrypterSr

README.md

@@ -28,7 +28,7 @@ The type of the material is defined by the file inside the folder:
 
   - `index.md` stands for a chapter
   - `article.md` stands for an article
-  - `task.md` stands for a task (solution must be provided in `solution.md` file aswell)
+  - `task.md` stands for a task (solution must be provided in `solution.md` file as well)
 
 Each of these files starts from the `# Main header`.