chore: Fix typos across the codebase

src/api/client/capabilities.rs

@@ -15,7 +15,7 @@ use crate::Ruma;
 
 /// # `GET /_matrix/client/v3/capabilities`
 ///
-/// Get information on the supported feature set and other relevent capabilities
+/// Get information on the supported feature set and other relevant capabilities
 /// of this server.
 pub(crate) async fn get_capabilities_route(
 	State(services): State<crate::State>,

src/api/client/well_known.rs

@@ -60,7 +60,7 @@ pub(crate) async fn well_known_support(
 		return Err(Error::BadRequest(ErrorKind::NotFound, "Not found."));
 	}
 
-	// TOOD: support defining multiple contacts in the config
+	// TODO: support defining multiple contacts in the config
 	let mut contacts: Vec<Contact> = vec![];
 
 	if let Some(role) = role {