Merge pull request #1249 from snowcoding/patch-2

Update article.md

Author: iliakan

1-js/06-advanced-functions/01-recursion/article.md

@@ -337,7 +337,7 @@ As we can see, when our function gets a department to sum, there are two possibl
 
 The 1st case is the base of recursion, the trivial case, when we get an array.
 
-The 2nd case when we gen an object is the recursive step. A complex task is split into subtasks for smaller departments. They may in turn split again, but sooner or later the split will finish at (1).
+The 2nd case when we get an object is the recursive step. A complex task is split into subtasks for smaller departments. They may in turn split again, but sooner or later the split will finish at (1).
 
 The algorithm is probably even easier to read from the code: