bench: refactor to use string interpolation in array/fixed-endian-factory

[muskaanshraogi]

Resolves a part of #8647.

Description

What is the purpose of this pull request?

This pull request:

• Refactors the JavaScript benchmark in array/fixed-endian-factory to use @stdlib/string/format for string interpolation instead of string concatenation when specifying the benchmark name

Related Issues

Does this pull request have any related issues?

This pull request has the following related issues:

• [RFC]: use string interpolation in JavaScript benchmarks for the benchmark name (tracking issue) #8647

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[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
array/fixed-endian-factory	$\color{red}1184/1437$ $color{green}+82.39%$	$\color{red}155/168$ $color{green}+92.26%$	$\color{red}23/33$ $color{green}+69.70%$	$\color{red}1184/1437$ $color{green}+82.39%$

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

[kgryte]

Left initial comments. Please make sure you have followed our dev guide and properly setup your local dev environment. A number of the issues flagged thus far could have been addressed locally before opening a PR.

[kgryte]

LGTM