Added better types

src/server.ts

@@ -40,7 +40,7 @@ function getUserIndex(userId: string, ballotId: string, questionId: string){
             questionId]
 }
 
-function persistTeams(userId: any, ballots: Team[]) {
+async function persistTeams(userId: any, ballots: Team[]): Promise<void> {
     const kv = await Deno.openKv();
     for(const ballot of ballots){
         for(const question of Object.keys(ballot.scores)){