Whole-word matching 整词匹配

在设置中，应当加上“整词匹配”的功能开关。它将忽略标点符号和空格个数，对整个单词内的拼写错误进行严格的匹配，扣除相似度，以便满足更多场景。
In setting part, “Whole-word matching” should be added. It will ignore punctuation, numbers of spaces, Tab, and line feed. The most important function is that it will match the whole word strictly, and reduce the similarity if there's a spelling mistake. Then it will satisfy more needs of different scenes.