Correct additional typo in README.md

Signed-off-by: Luckz <[email protected]>

Author: Luckz

README.md

@@ -24,7 +24,7 @@ docker run \
 ## Multi-Target Support (BETA)
 **This Feature is in beta and may require changes in future releases. Feedback is welcome.**
 
-This exporter supports the [multi-target pattern](https://prometheus.io/docs/guides/multi-target-exporter/). This allows running a single instance of this exporter for multiple postgres targets. Using the multi-target funcationality of this exporter is **optional** and meant for cases where it is impossible to install the exporter as a sidecar, for example SaaS-managed services.
+This exporter supports the [multi-target pattern](https://prometheus.io/docs/guides/multi-target-exporter/). This allows running a single instance of this exporter for multiple postgres targets. Using the multi-target functionality of this exporter is **optional** and meant for cases where it is impossible to install the exporter as a sidecar, for example SaaS-managed services.
 
 To use the multi-target functionality, send an http request to the endpoint `/probe?target=foo:5432` where target is set to the DSN of the postgres instance to scrape metrics from.