fix: Clarify cargo-script inside markdown

Author: epage

text/3503-frontmatter.md

@@ -92,7 +92,7 @@ the responsibility for high quality error messages will largely fall on cargo.
 [drawbacks]: #drawbacks
 
 - A new concept for Rust syntax, adding to overall cognitive load
-- Requires people escape markdown code fences with an extra backtick which they are likely not used to doing (or aware even exists)
+- When sharing in markdown documents (e.g. GitHub issues), requires people escape markdown code fences with an extra backtick which they are likely not used to doing (or aware even exists)
 
 # Rationale and alternatives
 [rationale-and-alternatives]: #rationale-and-alternatives