Merge pull request #28 from leancloud/wujun_wp

修改错别字以及不适当的*符号。
typo fix
feat: update code blocks
feat: update code blocks
feat: update code blocks
feat: update code blocks
feat: update code blocks
feat: update code blocks
fix: bold text
feat: update code blocks
feat: update code blocks
feat: update code blocks
feat: update code blocks
feat: update code blocks
feat: update code blocks
feat: update code blocks
feat: update code blocks
feat: update code blocks
added image for rtm push
feat: update code blocks