Apply suggestions from code review

Co-authored-by: Utkarsh Umesan Pillai <66651184+utpilla@users.noreply.github.com>

opentelemetry-otlp/src/exporter/tonic/logs.rs

@@ -86,8 +86,8 @@ impl LogExporter for TonicLogsClient {
 
     fn shutdown(&self) -> OTelSdkResult {
         // TODO: Implement actual shutdown
-        // Due to the use to tokio::sync::Mutex to guard
-        // the inner client, we need to lock the mutex
+        // Due to the use of tokio::sync::Mutex to guard
+        // the inner client, we need to await the call to lock the mutex
         // and that requires async runtime.
         // It is possible to fix this by using
         // a dedicated thread just to handle shutdown.

opentelemetry-sdk/CHANGELOG.md

@@ -61,7 +61,7 @@
   `scope` name but instead passes the incoming `name` when invoking
   `event_enabled` on processors.
 - **Breaking** for custom LogExporter authors: `shutdown()` method in
- `LogExporter` trait no longer requires a mutable ref to self. If the exporter
+ `LogExporter` trait no longer requires a mutable ref to `self`. If the exporter
  needs to mutate state, it should rely on interior mutability.
  [2764](https://github.com/open-telemetry/opentelemetry-rust/pull/2764)