Fix CloudEvent Code in readme (Good First Issue)

[bradmccoydev]

Currently, the code in README.md does not work for sending as a CloudEvent. I would like to mentor a beginner for this issue so please assign it to me. I have done an example process to get them used to git here they can follow: #33

We need to make the following changes..

1. Under line 52 add the following to make it easier for folks starting off

go get github.com/cloudevents/sdk-go/v2

2 . line 64 - Change from Sent to Send so it's not in the past tense

3. Under line 62 - add the following code to create the NewClientHTTP()

c, err := cloudevents.NewClientHTTP()
	if err != nil {
		log.Fatalf("failed to create client, %v", err)
	}

4. Line 66 add a * in front of ce

	if result := c.Send(ctx, *ce); cloudevents.IsUndelivered(result) {
		log.Fatalf("failed to send, %v", result)
	}

[bradmccoydev]

PR raised: #35

[bradmccoydev]

merged