Fixed spelling mistake

Author: mgoodwin1989

content/en/docs/reference/using-api/api-concepts.md

@@ -737,7 +737,7 @@ by default.
 The `kubectl` tool uses the `--validate` flag to set the level of field validation.
 Historically `--validate` was used to toggle client-side validation on or off as
 a boolean flag. Since Kubernetes 1.25, kubectl uses
-server-side field validation when sending requests to a serer with this feature
+server-side field validation when sending requests to a server with this feature
 enabled. Validation will fall back to client-side only when it cannot connect
 to an API server with field validation enabled.
 It accepts the values `ignore`, `warn`,