Merge pull request #3941 from AdamDang/patch-8

Some typo fixes

cmd/helm/installer/install.go

@@ -73,7 +73,7 @@ func Upgrade(client kubernetes.Interface, opts *Options) error {
 	if _, err := client.ExtensionsV1beta1().Deployments(opts.Namespace).Update(obj); err != nil {
 		return err
 	}
-	// If the service does not exists that would mean we are upgrading from a Tiller version
+	// If the service does not exist that would mean we are upgrading from a Tiller version
 	// that didn't deploy the service, so install it.
 	_, err = client.CoreV1().Services(opts.Namespace).Get(serviceName, metav1.GetOptions{})
 	if apierrors.IsNotFound(err) {

docs/plugins.md

@@ -183,7 +183,7 @@ If a plugin specifies `useTunnel: true`, Helm will do the following (in order):
 5. Close the tunnel
 
 The tunnel is removed as soon as the `command` returns. So, for example, a
-command cannot background a process and assume that that process will be able
+command cannot background a process and assume that process will be able
 to use the tunnel.
 
 ## A Note on Flag Parsing