docs(lib): fix some typos (#2818)

Signed-off-by: cuishuang <imcusg@gmail.com>

src/client/conn.rs

@@ -494,7 +494,7 @@ where
     ///
     /// This setting is configured by the server peer by sending the
     /// [`SETTINGS_ENABLE_CONNECT_PROTOCOL` parameter][2] in a `SETTINGS` frame.
-    /// This method returns the currently acknowledged value recieved from the
+    /// This method returns the currently acknowledged value received from the
     /// remote.
     ///
     /// [1]: https://datatracker.ietf.org/doc/html/rfc8441#section-4

src/ext.rs

@@ -179,7 +179,7 @@ impl OriginalHeaderOrder {
     // is needed to compile. Once ffi is stablized `no_run` should be removed
     // here.
     /// This returns an iterator that provides header names and indexes
-    /// in the original order recieved.
+    /// in the original order received.
     ///
     /// # Examples
     /// ```no_run

src/ffi/task.rs

@@ -32,7 +32,7 @@ pub struct hyper_executor {
     /// The executor of all task futures.
     ///
     /// There should never be contention on the mutex, as it is only locked
-    /// to drive the futures. However, we cannot gaurantee proper usage from
+    /// to drive the futures. However, we cannot guarantee proper usage from
     /// `hyper_executor_poll()`, which in C could potentially be called inside
     /// one of the stored futures. The mutex isn't re-entrant, so doing so
     /// would result in a deadlock, but that's better than data corruption.