Mark an outdated AUR font package

[sudoLife]

Description

Package nerd-fonts-complete-mono-glyphs in AUR is out of date since 2017-10-03. I added a little text next to it in readme.

Requirements / Checklist

• Read the Contributing Guidelines
• Read or at least glanced at the FAQ
• Read or at least glanced at the Wiki
• Scripts execute without error (if necessary):
  • If any of the scripts were modified they have been tested and execute without error, e.g.:
    • ./font-patcher Inconsolata.otf --fontawesome --octicons --pomicons
    • ./gotta-patch-em-all-font-patcher\!.sh Hermit
• Extended the README and documentation if necessary, e.g. You added a new font please update the table

What does this Pull Request (PR) do?

How should this be manually tested?

Any background context you can provide?

What are the relevant tickets (if any)?

Screenshots (if appropriate or helpful)

[ryanoasis]

Thanks for looking out!

I'm attempted in the future to remove all of these except maybe the top 2 or 3 most popular and add a link to AUR with query param that would just list out all of them (there are a lot apparently)