bench: refactor to use string interpolation in ndarray/zeros

[shubham220420]

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Description

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This pull request:

• refactor to use string interpolation in ndarray/zeros

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Coverage Report

Package	Statements	Branches	Functions	Lines
ndarray/zeros	$\color{green}189/189$ $\color{green}+0.00%$	$\color{green}32/32$ $\color{green}+0.00%$	$\color{green}1/1$ $\color{green}+0.00%$	$\color{green}189/189$ $\color{green}+0.00%$

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

[Planeshifter]

The code changes look correct - the mechanical refactoring from string concatenation to format() is applied consistently across all 13 benchmark files with proper import placement.

One thing to fix: the commit message currently reads bench: refactor to use string interpolation in @stdlib/ndarray/zeros. Per our conventions, package names in commit messages should use backticks and omit the leading @stdlib/ prefix. Could you amend it to:

bench: refactor to use string interpolation in `ndarray/zeros`

(See e.g. f834c92ade2 for the expected format.)