Rollup merge of rust-lang#143114 - leopardracer:master, r=RalfJung

Minor Documentation Improvements

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## Description
- Fixed typos and improved clarity in comments and documentation.

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Author: matthiaskrgr

src/tools/miri/README.md

@@ -592,7 +592,7 @@ Definite bugs found:
 * [Occasional memory leak in `std::mpsc` channels](https://github.com/rust-lang/rust/issues/121582) (original code in [crossbeam](https://github.com/crossbeam-rs/crossbeam/pull/1084))
 * [Weak-memory-induced memory leak in Windows thread-local storage](https://github.com/rust-lang/rust/pull/124281)
 * [A bug in the new `RwLock::downgrade` implementation](https://rust-lang.zulipchat.com/#narrow/channel/269128-miri/topic/Miri.20error.20library.20test) (caught by Miri before it landed in the Rust repo)
-* [Mockall reading unintialized memory when mocking `std::io::Read::read`, even if all expectations are satisfied](https://github.com/asomers/mockall/issues/647) (caught by Miri running Tokio's test suite)
+* [Mockall reading uninitialized memory when mocking `std::io::Read::read`, even if all expectations are satisfied](https://github.com/asomers/mockall/issues/647) (caught by Miri running Tokio's test suite)
 * [`ReentrantLock` not correctly dealing with reuse of addresses for TLS storage of different threads](https://github.com/rust-lang/rust/pull/141248)
 
 Violations of [Stacked Borrows] found that are likely bugs (but Stacked Borrows is currently just an experiment):

src/tools/miri/tests/fail/dangling_pointers/dangling_pointer_to_raw_pointer.rs

@@ -6,7 +6,7 @@ fn direct_raw(x: *const (i32, i32)) -> *const i32 {
 
 // Ensure that if a raw pointer is created via an intermediate
 // reference, we catch that. (Just in case someone decides to
-// desugar this differenly or so.)
+// desugar this differently or so.)
 fn via_ref(x: *const (i32, i32)) -> *const i32 {
     unsafe { &(*x).0 as *const i32 } //~ERROR: dangling pointer
 }

src/tools/test-float-parse/src/ui.rs

@@ -118,7 +118,7 @@ pub fn finish_all(tests: &[TestInfo], total_elapsed: Duration, cfg: &Config) ->
         match result {
             Ok(FinishedAll) => (),
             Err(EarlyExit::Timeout) => {
-                println!("      exited early; exceded {:?} timeout", cfg.timeout)
+                println!("      exited early; exceeded {:?} timeout", cfg.timeout)
             }
             Err(EarlyExit::MaxFailures) => {
                 println!("      exited early; exceeded {:?} max failures", cfg.max_failures)