chore: fix a few typos (#780)

tower/src/builder/mod.rs

@@ -325,7 +325,7 @@ impl<L> ServiceBuilder<L> {
     /// // ...but we want to call that service with a `usize`. What do we do?
     ///
     /// let usize_svc = ServiceBuilder::new()
-    ///      // Add a middlware that converts the request type to a `String`:
+    ///      // Add a middleware that converts the request type to a `String`:
     ///     .map_request(|request: usize| format!("{}", request))
     ///     // ...and wrap the string service with that middleware:
     ///     .service(string_svc);

tower/src/load/mod.rs

@@ -26,7 +26,7 @@
 //! [`TrackCompletion`] trait, with [`CompleteOnResponse`] as the default type. The behavior of
 //! [`CompleteOnResponse`] is what you would normally expect for a request-response cycle: when the
 //! response is produced, the request is considered "finished", and load goes down. This can be
-//! overriden by your own user-defined type to track more complex request completion semantics. See
+//! overridden by your own user-defined type to track more complex request completion semantics. See
 //! the documentation for [`completion`] for more details.
 //!
 //! # Examples

tower/src/ready_cache/cache.rs

@@ -42,7 +42,7 @@ use tracing::{debug, trace};
 /// the _pending_ set to be driven to readiness again.
 ///
 /// When `ReadyCache::check_ready*` returns `false`, it indicates that the
-/// specified service is _not_ ready. If an error is returned, this indicats that
+/// specified service is _not_ ready. If an error is returned, this indicates that
 /// the server failed and has been removed from the cache entirely.
 ///
 /// [`ReadyCache::evict`] can be used to remove a service from the cache (by key),

tower/src/util/call_all/common.rs

@@ -126,7 +126,7 @@ where
             let svc = this
                 .service
                 .as_mut()
-                .expect("Using CallAll after extracing inner Service");
+                .expect("Using CallAll after extracting inner Service");
 
             if let Err(e) = ready!(svc.poll_ready(cx)) {
                 // Set eof to prevent the service from being called again after a `poll_ready` error