chore: fix some typos in comment

tests/ui/derives/issue-91492.rs

@@ -13,7 +13,7 @@ fn fun2(foo: &mut Vec<SomeDerives>, bar: &[SomeDerives]) {
 }
 
 // Try and fail to reproduce the issue without vec.
-// No idea why it doesnt reproduce the issue but its still a useful test case.
+// No idea why it doesn't reproduce the issue but its still a useful test case.
 struct Object<T, A>(T, A);
 impl<T: Clone, A: Default> Object<T, A> {
     fn use_clone(&self) {}

tests/ui/linkage-attr/unstable-flavor.rs

@@ -1,4 +1,4 @@
-// Even though this test only checks 2 of the 10 or so unstable linker flavors, it exercizes the
+// Even though this test only checks 2 of the 10 or so unstable linker flavors, it exercises the
 // unique codepath checking all unstable options (see `LinkerFlavorCli::is_unstable` and its
 // caller). If it passes, all the other unstable options are rejected as well.
 //

tests/ui/traits/alias/self-in-generics.rs

@@ -1,4 +1,4 @@
-// HIR ty lowering uses `FreshTy(0)` as a dummy `Self` type when instanciating trait objects.
+// HIR ty lowering uses `FreshTy(0)` as a dummy `Self` type when instantiating trait objects.
 // This `FreshTy(0)` can leak into substs, causing ICEs in several places.
 
 #![feature(trait_alias)]

tests/ui/traits/next-solver/cycles/inductive-cycle-but-ok.rs

@@ -11,7 +11,7 @@
 //     - candidate: overflow-impl
 //       - `Root: Trait` (inductive cycle ~> OVERFLOW)
 //     - candidate: trivial-impl ~> YES
-//     - merge respones ~> YES
+//     - merge response ~> YES
 //   - `MultipleCandidates: Trait` (in provisional cache ~> OVERFLOW)
 //
 // We previously incorrectly treated the `MultipleCandidates: Trait` as

tests/ui/traits/next-solver/cycles/provisional-cache-impacts-behavior.rs

@@ -43,7 +43,7 @@
 //
 // Theoretically, this can result in observable behavior differences
 // due to incompleteness. However, this would require a very convoluted
-// example and would still be sound. The difference is determinstic
+// example and would still be sound. The difference is deterministic
 // and can not be observed outside of the cycle itself as we don't move
 // non-root cycle participants into the global cache.
 //