highschool-sweetheart: Exchange complex ASCII heart with a simple box

[angelikatyborska]

Resolves #1556

[github-actions]

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Automated comment created by PR Commenter 🤖.

[angelikatyborska]

I wanted to include it without any spaces:

Suggested change

	# ❤-------------------❤
	# | B. M. + R. L. |
	# ❤-------------------❤
	#❤-------------------❤
	#| B. M. + R. L. |
	#❤-------------------❤

But the Elixir formatter adds the spaces

[neenjaw]

This is a good option