fix(notecard): remove leading space of first paragraph in Chinese

[yin1999]

Description

remove the leading space of the first paragraph in note card

Motivation

This PR reflects the changes made in yari, see: mdn/yari#10168 (review)

[caugner]

Is the space really wrong, or should it just not be displayed? I'm asking to understand if we should fix this in Fred instead.

(I'm not sure if rari has other locale-specific tweaks like this.)

/cc @argl

[yin1999]

Is the space really wrong, or should it just not be displayed?

For Chinese documents, there should be no spaces here. See: https://aubreyyung.com/space-between-chinese-words/#:~:text=No%20space%20after%20punctuation.%20(NB!%20Chinese%20punctuation%20marks%20have%20the%20same%20width%20as%20a%20Chinese%20character)

If the space can be excluded when copying and reading (including in accessible ways), then it is acceptable to implement it in fred.

[caugner]

LGTM, but requesting a second opinion from @argl.

[argl]

LGTM, thanks!