My reasoning for this file was that your password is specific to the platform, not to edX. For the other cheatsheet, this was my reasoning:
1) (line 21), not to translate "edX" in "edX Additions" because it was something that edX extended markdown to do. This one could go either way for me.

2) (line 38), not to translate 'edX' because it was giving an example link.