Hybrid search is missing target vectors

[joshdschneider]

I'm unable to pass target vectors in a hybrid search query. Here's an example:

const result = await client.graphql
  .get()
  .withClassName('WineReviewNV')
  .withHybrid({
    query: 'a sweet German white wine',
    targetVectors: ['title_country'],
  })
  .withLimit(2)
  .withFields('title review_body country')
  .do();

console.log(JSON.stringify(result, null, 2));

It looks like it's missing from the GraphQLHybrid class. I'll go ahead and open a PR to fix.