Fix some doc typos

Author: dns2utf8

RELEASES.md

@@ -1778,7 +1778,7 @@ Language
 - [Undeprecate lint `unstable_features` and make use of it in the compiler.](https://github.com/rust-lang/rust/pull/118639/)
 - [Make inductive cycles in coherence ambiguous always.](https://github.com/rust-lang/rust/pull/118649/)
 - [Get rid of type-driven traversal in const-eval interning](https://github.com/rust-lang/rust/pull/119044/),
-  only as a [future compatiblity lint](https://github.com/rust-lang/rust/pull/122204) for now.
+  only as a [future compatibility lint](https://github.com/rust-lang/rust/pull/122204) for now.
 - [Deny braced macro invocations in let-else.](https://github.com/rust-lang/rust/pull/119062/)
 
 <a id="1.77.0-Compiler"></a>

compiler/rustc_next_trait_solver/src/canonicalizer.rs

@@ -27,7 +27,7 @@ enum CanonicalizeInputKind {
     ParamEnv,
     /// When canonicalizing predicates, we don't keep `'static`. If we're
     /// currently outside of the trait solver and canonicalize the root goal
-    /// during HIR typeck, we replace each occurance of a region with a
+    /// during HIR typeck, we replace each occurrence of a region with a
     /// unique region variable. See the comment on `InferCtxt::in_hir_typeck`
     /// for more details.
     Predicate { is_hir_typeck_root_goal: bool },