appending map into map golang

m := make(map[string]int)
m["numberOne"] = 1
m["numberTwo"] = 2

{ "notes": 
    {
    "Title":note.Title,
    "Body":note.Body,
    },
    {
    "Title":note.Title,
    "Body":note.Body,
    },
    {
    "Title":note.Title,
    "Body":note.Body,
    },
}

for _, note := range notes {
        thisNote := map[string]string{
            "Title":note.Title,
            "Body":note.Body,
        }

        content["notes"] = append(content["notes"], thisNote)
}