Change markdown editor empty-state text

[Michael-Grover]

The markdown editor currently shows the following text when all of the content has been deleted:
"Enter some rich text"

As a user, I don’t know what rich text is. I think we should avoid technical jargon in the markdown editor. Jargon in the flow editor is more appropriate because we expect people using flows to have some developer knowledge.

Let's change the text to say “Enter some text here”.

Also change the text opacity from .333 to .55. The contrast is too low to be legible.

[Aniruddha-Shriwant]

May I work on this?

[Michael-Grover]

@Aniruddha-Shriwant thanks, I've assigned it to you

[atharvashinde01]

May I work on this issue?

[Michael-Grover]

@atharvashinde01 The issue is already assigned to @Aniruddha-Shriwant