fix: update comment of knative-component auto PR (#2707)

* comment

Signed-off-by: David Fridrich <fridrich.david19@gmail.com>

* fix format

Signed-off-by: David Fridrich <fridrich.david19@gmail.com>

---------

Signed-off-by: David Fridrich <fridrich.david19@gmail.com>

Author: gauron99

hack/cmd/update-knative-components/main.go

@@ -316,7 +316,8 @@ func prepareBranch(branchName string) error {
 // create a PR via GH API on the func repo with those new versions
 func createPR(ctx context.Context, client *github.Client, title string, branchName string) error {
 	fmt.Print("> creating PR...")
-	body := fmt.Sprintf("%s\n/assign @gauron99", title)
+	bodyText := "You might need to close & open this PR so all tests can run"
+	body := fmt.Sprintf("%s\n%s\n/assign @gauron99", title, bodyText)
 
 	newPR := github.NewPullRequest{
 		Title:               github.Ptr(title),