Fix typo: quailfied -> qualified
diff --git a/src/expr.rs b/src/expr.rs
index 388b7a6..18f5296 100644
--- a/src/expr.rs
+++ b/src/expr.rs
@@ -799,8 +799,8 @@
/// A path pattern like `Color::Red`, optionally qualified with a
/// self-type.
///
- /// Unquailfied path patterns can legally refer to variants, structs,
- /// constants or associated constants. Quailfied path patterns like
+ /// Unqualified path patterns can legally refer to variants, structs,
+ /// constants or associated constants. Qualified path patterns like
/// `<A>::B::C` and `<A as Trait>::B::C` can only legally refer to
/// associated constants.
///