Any docs preposition change

This changes the docs referring to where a user should be wary of depending on "Any" trait impls from warning about relying on them "outside" of their code to warning about relying on them "inside" of their code.

Author: bowbahdoe

src/libcore/any.rs

@@ -431,7 +431,7 @@ impl Any+Send+Sync {
 ///
 /// While `TypeId` implements `Hash`, `PartialOrd`, and `Ord`, it is worth
 /// noting that the hashes and ordering will vary between Rust releases. Beware
-/// of relying on them outside of your code!
+/// of relying on them inside of your code!
 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct TypeId {