chore: update test messages in constants/float64

[hrshya]

Resolves none.

Description

What is the purpose of this pull request?

This pull request:

• Updates the test messages to follow code conventions.

Related Issues

Does this pull request have any related issues?

This pull request:

• resolves no related issues.

Questions

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No.

Other

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No.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines.

---

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[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
constants/float64/apery	$\color{green}49/49$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}0/0$ $\color{green}+100.00\%$	$\color{green}49/49$ $\color{green}+100.00\%$
constants/float64/catalan	$\color{green}49/49$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}0/0$ $\color{green}+100.00\%$	$\color{green}49/49$ $\color{green}+100.00\%$
constants/float64/cbrt-eps	$\color{green}53/53$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}0/0$ $\color{green}+100.00\%$	$\color{green}53/53$ $\color{green}+100.00\%$
constants/float64/e	$\color{green}49/49$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}0/0$ $\color{green}+100.00\%$	$\color{green}49/49$ $\color{green}+100.00\%$
constants/float64/eps	$\color{green}57/57$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}0/0$ $\color{green}+100.00\%$	$\color{green}57/57$ $\color{green}+100.00\%$
constants/float64/eulergamma	$\color{green}49/49$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}0/0$ $\color{green}+100.00\%$	$\color{green}49/49$ $\color{green}+100.00\%$
constants/float64/exponent-bias	$\color{green}58/58$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}0/0$ $\color{green}+100.00\%$	$\color{green}58/58$ $\color{green}+100.00\%$
constants/float64/fourth-pi	$\color{green}48/48$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}0/0$ $\color{green}+100.00\%$	$\color{green}48/48$ $\color{green}+100.00\%$
constants/float64/fourth-root-eps	$\color{green}53/53$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}0/0$ $\color{green}+100.00\%$	$\color{green}53/53$ $\color{green}+100.00\%$
constants/float64/gamma-lanczos-g	$\color{green}48/48$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}0/0$ $\color{green}+100.00\%$	$\color{green}48/48$ $\color{green}+100.00\%$

The above coverage report was generated for the changes in this PR.

[kgryte]

Thanks for doing this clean up work, @hrshya!

[kgryte]

As the CI failure stems from too many downstream deps and known build error, I will go ahead and merge.