Do suggestions by Midou

Signed-off-by: Odyssey <hi@odyssey346.dev>

cmd/gothub/update.go

@@ -25,7 +25,7 @@ func init() {
 
 func update() {
 	if os.Getenv("DOCKER") == "true" {
-		println("The GotHub update command does not work on Docker. Just re-create the container with a new image.")
+		println("The GotHub update command does not work on Docker. Please re-create the container with a new image instead.")
 		os.Exit(1)
 	}
 	gitPull := exec.Command("git", "pull")
@@ -43,7 +43,7 @@ func update() {
 	if runtime.GOOS == "windows" {
 		err := exec.Command("go", "build", "-o", "gothub.exe").Run()
 		if err != nil {
-			println("Couldn't build GotHub. ", err)
+			println("Couldn't build GotHub.", err)
 			os.Exit(1)
 		} else {
 			println("GotHub updated successfully.")
@@ -52,7 +52,7 @@ func update() {
 	} else {
 		err := exec.Command("go", "build").Run()
 		if err != nil {
-			println("Couldn't build GotHub. ", err)
+			println("Couldn't build GotHub.", err)
 			os.Exit(1)
 		} else {
 			println("GotHub updated successfully.")