docs: fix permutations README grammar

DeoJin · trekhleb · commit fe332ffa4eff · 2026-05-28T07:24:18.000-07:00
diff --git a/src/algorithms/sets/permutations/README.md b/src/algorithms/sets/permutations/README.md
@@ -27,7 +27,7 @@ n * (n-1) * (n -2) * ... * 1 = n!
 ## Permutations with repetitions
 
 When repetition is allowed we have permutations with repetitions.
-For example the the lock below: it could be `333`.
+For example, the lock below could be `333`.
 
 ![Permutation Lock](https://www.mathsisfun.com/combinatorics/images/permutation-lock.jpg)
 
