docs: clarify webhook url segments and include port (#22)

When deploying this webhook service, we noticed that the url specified
in the docs was missing the port which is assigned by default in the
code. If left unspecified, http will assume port 80, however the code
defaults to port 8000 unless explicitly set otherwise. This also
clarifies the strucuture of the url segments in the webhook.

README.md

@@ -23,7 +23,7 @@ spec:
     - name: k6-load-test
       timeout: 5m
       type: pre-rollout
-      url: http://k6-loadtester.flagger/launch-test
+      url: http://<k6_loadtester_service_name>.<k6_loadtester_namespace>:<k6_loadtester_service_port>/launch-test
       metadata:
         script: |
           import http from 'k6/http';
@@ -43,7 +43,7 @@ spec:
           };
 
           export default function () {
-            http.get('http://<your_service>-canary.<namespace>:80/');
+            http.get('http://<your_service>-canary.<namespace>:<service_port>/');
             sleep(0.10);
           }
         upload_to_cloud: "true"

example/canary.yml

@@ -42,7 +42,7 @@ spec:
       name: k6-load-test
       timeout: 5m
       type: pre-rollout
-      url: http://k6-loadtester.flagger/launch-test
+      url: http://k6-loadtester.flagger:8000/launch-test
   autoscalerRef:
     apiVersion: autoscaling/v2beta2
     kind: HorizontalPodAutoscaler
@@ -55,4 +55,4 @@ spec:
   targetRef:
     apiVersion: apps/v1
     kind: Deployment
-    name: my-app
+    name: my-app