more selfexplaining upgrade process

At least for me it was not very intuitive what I have to do here. Maybe because I overread "not" and also because I liked to upgrade all packages. That was not explained ether, so I didn't consider to just press enter. This hopefully makes it a little bit more understandable.

upgrade.go

@@ -356,7 +356,7 @@ func upgradePkgs(aurUp, repoUp upSlice) (stringset.StringSet, stringset.StringSe
 	fmt.Printf("%s"+bold(" %d ")+"%s\n", bold(cyan("::")), allUpLen, bold("Packages to upgrade."))
 	allUp.print()
 
-	fmt.Println(bold(green(arrow + " Packages to not upgrade: (eg: 1 2 3, 1-3, ^4 or repo name)")))
+	fmt.Println(bold(green(arrow + " Packages to exclude: (eg: \"1 2 3\", \"1-3\", \"^4\" or repo name)")))
 	fmt.Print(bold(green(arrow + " ")))
 
 	numbers, err := getInput(config.AnswerUpgrade)