fix src in elixir screenshot img tag

[kadimisetty]

Description

fixes img src url for elixir screenshot 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?

fixes img src url for elixir screenshot in readme

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 the fix and contribution!

I think this might be an issue upstream, we are simply copying the same readme with some amended info specific for the Nerd Font patch.