Need to modify to satisfy "brew audit --strict --online gqrx"

[chleggett]

% brew audit --strict --online gqrx ==> brew style gqrx == /usr/local/Library/Taps/chleggett/homebrew-gqrx/gqrx.rb == C: 10: 14: Prefer double-quoted strings unless you need single quotes to avoid extra backslashes for escaping. C: 11: 14: Prefer double-quoted strings unless you need single quotes to avoid extra backslashes for escaping. C: 12: 14: Prefer double-quoted strings unless you need single quotes to avoid extra backslashes for escaping. C: 13: 14: Prefer double-quoted strings unless you need single quotes to avoid extra backslashes for escaping. C: 14: 14: Prefer double-quoted strings unless you need single quotes to avoid extra backslashes for escaping.

1 file inspected, 5 offenses detected

==> audit problems chleggett/gqrx/gqrx:

• Stable: SHA1 checksums are deprecated, please use SHA256
• Formula should have a desc (Description).
• require "formula" is now unnecessary

Error: 3 problems in 1 formula