remove bullet point for tasklist

[lyndaidaii]

Remove bullet point for task list when we render readme markdown

before:

After:
display page:

upload page:

manage package page:

Addresses #8506

[loic-sharma]

Does this break lists? For example, what does this markdown look like?

My list:
* Item 1
* Item 2

My second list:
1. Item 1
2. Item 2

My todo:
* [ ] Item 1
* [ ] Item 2

[loic-sharma]

Suggested change

	#readme-preview{
	#readme-preview {

[lyndaidaii]

Does this break lists? For example, what does this markdown look like?

My list:
* Item 1
* Item 2

My second list:
1. Item 1
2. Item 2

My todo:
* [ ] Item 1
* [ ] Item 2

With current changes, it won't break the list