Review format for standard and informal standard labels

[p3r7]

Libraries considered "standard" can have one of the following labels:

standard (bundled with every Emacs install)

informal standard (not bundled with Emacs, but used everywhere)

The bold face in GitHub markdown rendering is the same as the level-4 headlines.

This makes reading the document difficult.

Some proposals:

• use italic or underline instead of bold
• use emojis

[p3r7]

Moved from bold to italics which improves legibility.

Also tried underline, but not supported by github.

Keeping this open, as I feel we could find a better solution, like the emojis I used for the list of apps in awesome-monome-norns.

[p3r7]

ended up using ribbon icons which do improve legibility.