chore: Fix some comments

compiler/rustc_borrowck/src/type_check/liveness/trace.rs

@@ -610,7 +610,7 @@ impl<'tcx> LivenessContext<'_, '_, '_, 'tcx> {
             Err(ErrorGuaranteed { .. }) => {
                 // We don't run dropck on HIR, and dropck looks inside fields of
                 // types, so there's no guarantee that it succeeds. We also
-                // can't rely on the the `ErrorGuaranteed` from `fully_perform` here
+                // can't rely on the `ErrorGuaranteed` from `fully_perform` here
                 // because it comes from delay_span_bug.
                 //
                 // Do this inside of a probe because we don't particularly care (or want)

compiler/rustc_hir/src/intravisit.rs

@@ -363,7 +363,7 @@ pub trait Visitor<'v>: Sized {
     /// See the doc comments on [`Ty`] for an explanation of what it means for a type to be
     /// ambiguous.
     ///
-    /// The [`Visitor::visit_infer`] method should be overriden in order to handle infer vars.
+    /// The [`Visitor::visit_infer`] method should be overridden in order to handle infer vars.
     fn visit_ty(&mut self, t: &'v Ty<'v, AmbigArg>) -> Self::Result {
         walk_ty(self, t)
     }
@@ -374,7 +374,7 @@ pub trait Visitor<'v>: Sized {
     /// See the doc comments on [`ConstArg`] for an explanation of what it means for a const to be
     /// ambiguous.
     ///
-    /// The [`Visitor::visit_infer`] method should be overriden in order to handle infer vars.
+    /// The [`Visitor::visit_infer`] method should be overridden in order to handle infer vars.
     fn visit_const_arg(&mut self, c: &'v ConstArg<'v, AmbigArg>) -> Self::Result {
         walk_ambig_const_arg(self, c)
     }

compiler/rustc_lint/src/default_could_be_derived.rs

@@ -133,7 +133,7 @@ impl<'tcx> LateLintPass<'tcx> for DefaultCouldBeDerived {
             return;
         }
 
-        // At least one of the fields with a default value have been overriden in
+        // At least one of the fields with a default value have been overridden in
         // the `Default` implementation. We suggest removing it and relying on `..`
         // instead.
         let any_default_field_given =

src/doc/unstable-book/src/language-features/default-field-values.md

@@ -67,7 +67,7 @@ have default field values.
 ## Lints
 
 When manually implementing the `Default` trait for a type that has default
-field values, if any of these are overriden in the impl the
+field values, if any of these are overridden in the impl the
 `default_overrides_default_fields` lint will trigger. This lint is in place
 to avoid surprising diverging behavior between `S { .. }` and
 `S::default()`, where using the same type in both ways could result in

tests/ui/check-cfg/allow-same-level.rs

@@ -3,7 +3,7 @@
 //
 // It should work, but due to interactions between how #[cfg]s are
 // expanded, the lint machinery and the check-cfg impl, we
-// miss the #[allow], althrough we probably shoudln't.
+// miss the #[allow], althrough we probably shouldn't.
 //
 // cf. https://github.com/rust-lang/rust/issues/124735
 //