给 purc 输出的 HTML 加一个 pretty printer 过滤

[tiansiyuan]

现在（Ubuntu 22.04.1 LTS）的输出是这样的：

tsy@tsy-Lenovo-V330-14IKB:~/PurC/build$ purc -b hvml/fibonacci-html-temp.hvml purc 0.8.0 Copyright (C) 2022 FMSoft Technologies. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

Executing HVML program from file:///home/tsy/PurC/build/hvml/fibonacci-html-temp.hvml...

The main coroutine exited.

The document generated:

Fibonacci Numbers less than 2000

1. 0
2. 1
3. 1
4. 2
5. 3
6. 5
7. 8
8. 13
9. 21
10. 34
11. 55
12. 89
13. 144
14. 233
15. 377
16. 610
17. 987
18. 1597

Totally 18 numbers

The executed result: [ 18, 1597 ]

经 pretty printer 过滤后的 HTML 部分看起来：

Fibonacci Numbers less than 2000

1. 0
2. 1
3. 1
4. 2
5. 3
6. 5
7. 8
8. 13
9. 21
10. 34
11. 55
12. 89
13. 144
14. 233
15. 377
16. 610
17. 987
18. 1597

Totally 18 numbers

[tiansiyuan]

HTML 被 github 渲染了，请见附件：beforepp.txt 和 afterpp.txt。 beforepp.txt

afterpp.txt

[VincentWei]

Indeed, this is a bug. We will try to fix it in the next release.

[VincentWei]

This issue has been fixed and/or enhanced.