console: add note about typing exit to exit (#23602)

* add explicit note about typing exit in console

* Add note about typing exit as alternative

cmd/geth/consolecmd_test.go

@@ -75,7 +75,7 @@ at block: 0 ({{niltime}})
  datadir: {{.Datadir}}
  modules: {{apis}}
 
-To exit, press ctrl-d
+To exit, press ctrl-d or type exit
 > {{.InputLine "exit"}}
 `)
 	geth.ExpectExit()
@@ -149,7 +149,7 @@ at block: 0 ({{niltime}}){{if ipc}}
  datadir: {{datadir}}{{end}}
  modules: {{apis}}
 
-To exit, press ctrl-d
+To exit, press ctrl-d or type exit
 > {{.InputLine "exit" }}
 `)
 	attach.ExpectExit()

console/console.go

@@ -324,7 +324,7 @@ func (c *Console) Welcome() {
 		sort.Strings(modules)
 		message += " modules: " + strings.Join(modules, " ") + "\n"
 	}
-	message += "\nTo exit, press ctrl-d"
+	message += "\nTo exit, press ctrl-d or type exit"
 	fmt.Fprintln(c.printer, message)
 }