typo in L05le_mul_right.lean

Game/Levels/AdvMultiplication/L05le_mul_right.lean

@@ -19,7 +19,7 @@ TheoremDoc MyNat.le_mul_right as "le_mul_right" in "≤"
 Introduction
 "
 In Prime Number World we will be proving that $2$ is prime.
-To do this, we will have to rule out things like $2 ≠ 37 × 42.$
+To do this, we will have to rule out things like $2 = 37 × 42.$
 We will do this by proving that any factor of $2$ is at most $2$,
 which we will do using this lemma. The proof I have in mind manipulates the hypothesis
 until it becomes the goal, using pretty much everything which we've proved in this world so far.