document that session key generation stores keys (#3366)

* document that session key generation stores keys

* final typo fix

substrate/core/service/src/components.rs

@@ -145,10 +145,11 @@ pub type PoolApi<C> = <C as Components>::TransactionPoolApi;
 pub trait RuntimeGenesis: Serialize + DeserializeOwned + BuildStorage {}
 impl<T: Serialize + DeserializeOwned + BuildStorage> RuntimeGenesis for T {}
 
-/// Something that can create initial session keys from given seeds.
+/// Something that can create and store initial session keys from given seeds.
 pub trait InitialSessionKeys<C: Components> {
-	/// Generate the initial session keys for the given seeds.
-	fn generate_intial_session_keys(
+	/// Generate the initial session keys for the given seeds and store them in
+	/// an internal keystore.
+	fn generate_initial_session_keys(
 		client: Arc<ComponentClient<C>>,
 		seeds: Vec<String>,
 	) -> error::Result<()>;
@@ -158,7 +159,7 @@ impl<C: Components> InitialSessionKeys<Self> for C where
 	ComponentClient<C>: ProvideRuntimeApi,
 	<ComponentClient<C> as ProvideRuntimeApi>::Api: session::SessionKeys<ComponentBlock<C>>,
 {
-	fn generate_intial_session_keys(
+	fn generate_initial_session_keys(
 		client: Arc<ComponentClient<C>>,
 		seeds: Vec<String>,
 	) -> error::Result<()> {

substrate/core/service/src/lib.rs

@@ -175,7 +175,7 @@ impl<Components: components::Components> Service<Components> {
 		let finality_proof_provider = Components::build_finality_proof_provider(client.clone())?;
 		let chain_info = client.info().chain;
 
-		Components::RuntimeServices::generate_intial_session_keys(
+		Components::RuntimeServices::generate_initial_session_keys(
 			client.clone(),
 			config.dev_key_seed.clone().map(|s| vec![s]).unwrap_or_default(),
 		)?;