fix typo

Co-authored-by: Ben Kimock <kimockb@gmail.com>

compiler/rustc_middle/src/mir/interpret/pointer.rs

@@ -126,7 +126,7 @@ pub trait Provenance: Copy + fmt::Debug + 'static {
     fn join(left: Option<Self>, right: Option<Self>) -> Option<Self>;
 }
 
-/// The type of provenance in the compiler-time interpreter.
+/// The type of provenance in the compile-time interpreter.
 /// This is a packed representation of an `AllocId` and an `immutable: bool`.
 #[derive(Copy, Clone, Eq, Hash, Ord, PartialEq, PartialOrd)]
 pub struct CtfeProvenance(NonZeroU64);