通过<RichText>渲染出来的效果存在很多修饰语，有什么方法可以解决
#!/system/markdown↵↵# h1 Heading 8-)↵↵↵## h2 Heading↵### h3 Heading↵#### h4 Heading↵##### h5 Heading↵###### h6 Heading![]↵↵↵## Horizontal Rules↵↵___↵↵---↵↵↵↵↵## Typographic replacements↵↵Enable typographer option to see result.↵↵(c) (C) (r) (R) (tm) (TM) (p) (P) +-↵↵test.. test... test..... test?..... test!....↵↵!!!!!! ???? ,, -- ---↵↵"Smartypants, double quotes" and 'single quotes'↵↵↵## Emphasis↵↵This is bold text*↵↵__This is bold text__↵↵This is italic text↵↵_This is italic text_↵↵Strikethrough↵↵↵## Blockquotes↵↵> Blockquotes test↵ - nest↵> Blockquotes can also be nested...↵>> ...by using additional greater-than signs right next to each other...↵> > > ...or with spaces between arrows.↵↵↵## Lists↵↵Unordered↵↵+ Create a list by starting a line with +, -, or *↵+ Sub-lists are made by indenting 2 spaces:↵ - Marker character change forces new list start:↵ * Ac tristique libero volutpat at↵ + Facilisis in pretium nisl aliquet↵ - Nulla volutpat aliquam velit↵+ Very easy!↵↵Ordered↵↵1. Lorem ipsum dolor sit amet↵2. Consectetur adipiscing elit↵3. Integer molestie lorem at massa↵↵↵1. You can use sequential numbers...↵1. ...or keep all the numbers as 1.↵↵Start numbering with offset:↵↵57. foo↵1. bar↵↵↵## Code↵↵Inline code↵↵Indented code↵↵ // Some comments↵ line 1 of code↵ line 2 of code↵ line 3 of code↵↵↵Block code "fences"↵↵↵Sample text here...↵↵![]