chore(concepts): address spelling feedback

Co-authored-by: Mark Phelps <[email protected]>

docs/site/pages/concepts/controllers.mdx

@@ -127,7 +127,7 @@ Head to [Configuration: Controller: Template](/configuration/controllers#templat
 ### WASM Controller
 
 The WASM controller leverages the [Wazero](https://wazero.io/) runtime for Go to support implementing Controllers in the language of your choice.
-WASM binary implementations should expose a command-line interfaces with a number of subcommands.
+WASM binary implementations should expose a command-line interface with a number of subcommands.
 
 <Callout emoji="💡">
 Checkout the [Flipt Controller](https://github.com/flipt-io/cup/blob/53f1aa7cfb90c3a11aecf62eb8d1b726623a37cd/ext/controllers/flipt.io/v1alpha1/cmd/flipt/main.go#L27-L32) we have implemented in Go. This is compiled to WASM so that we can managed features flags as configuration via Cup.

docs/site/pages/concepts/definitions.mdx

@@ -9,7 +9,7 @@ to learn how they can be configured.
 </Callout>
 
 Resource definitions describe the schema for the different resource kinds available in a Cup instance.
-When you interact with the Cup API, you do so through the various resource definition configured.
+When you interact with the Cup API, you do so through the various configured resource definitions.
 
 A Cup resource is comprised of a few components to build the entire definition.
 These components and concepts are taken directly from Kubernetes and its custom resource definitions (CRD).