Update quickstart guide (redhat-developer#5763)

* Update quickstart guide

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**What type of PR is this:**

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/kind documentation

**What does this PR do / why we need it:**

What's done:
- Minor update to the quickstart guide to remove references to my username
- Add more details how to test under Deploy

**Which issue(s) this PR fixes:**
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N/A

**PR acceptance criteria:**

- [X] Documentation

**How to test changes / Special notes to the reviewer:**

Signed-off-by: Charlie Drage <[email protected]>

* Update docs/website/versioned_docs/version-3.0.0/user-guides/quickstart.md

Co-authored-by: Parthvi Vala <[email protected]>

Co-authored-by: Parthvi Vala <[email protected]>

docs/website/versioned_docs/version-3.0.0/user-guides/quickstart.md

@@ -366,7 +366,7 @@ $ odo deploy
  /  \__/    odo version: v3.0.0-alpha1
  \__/
 
-↪ Building & Pushing Container: cdrage/test
+↪ Building & Pushing Container: MYUSERNAME/test
  •  Building image locally  ...
  ✓  Building image locally [880ms]
  •  Pushing image to container registry  ...
@@ -387,7 +387,9 @@ $ odo deploy
 Your Devfile has been successfully deployed
 ```
 
-Your application has now been deployed to the Kubernetes cluster with Deployment and Service resources.
+Your application has now been deployed to the Kubernetes cluster with Deployment, Service, and Ingress resources.
+
+Test your application by visiting the `DOMAIN_NAME` variable that you had set in the `devfile.yaml`.
 
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