Improve observability docs readability

Signed-off-by: JeevaRamanathan <64531160+JeevaRamanathan@users.noreply.github.com>

docs/plugins/observability.md

@@ -21,7 +21,7 @@ The backend supplies a central logging service,
 [`rootLogger`](../backend-system/core-services/root-logger.md), as well as a plugin
 based logger, [`logger`](../backend-system/core-services/logger.md) from `coreServices`.
 To add additional granularity to your logs, you can create children from the plugin
-based logger, using the `.child()` method and provide is with JSON data. For example,
+based logger, using the `.child()` method and provide it with JSON data. For example,
 if you wanted to log items for a specific span in your plugin, you could do
 
 ```ts