Merge remote-tracking branch 'upstream/master'

docs/gitbook/tutorials/istio-progressive-delivery.md

@@ -12,6 +12,8 @@ Install Istio with telemetry support and Prometheus:
 
 ```bash
 istioctl manifest apply --set profile=default
+# istio 1.7 or newer
+istioctl install --set profile=default
 ```
 
 Install Flagger using Kustomize (kubectl >= 1.14) in the `istio-system` namespace:

docs/gitbook/tutorials/nginx-progressive-delivery.md

@@ -345,7 +345,7 @@ podinfod=stefanprodan/podinfo:3.1.3
 Generate high response latency:
 
 ```bash
-watch curl http://app.exmaple.com/delay/2
+watch curl http://app.example.com/delay/2
 ```
 
 Watch Flagger logs:

docs/gitbook/tutorials/skipper-progressive-delivery.md

@@ -351,7 +351,7 @@ podinfod=stefanprodan/podinfo:4.0.6
 Generate high response latency:
 
 ```bash
-watch curl http://app.exmaple.com/delay/2
+watch curl http://app.example.com/delay/2
 ```
 
 Watch Flagger logs: