fix(lib): fixed broadcast arrays main.js doctest

[lohithganni]

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Resolves #{{TODO: add issue number}}.

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• resolves #{{TODO: add issue number}}

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Coverage Report

Package	Statements	Branches	Functions	Lines
ndarray/base/broadcast-arrays	$\color{green}216/216$ $\color{green}+100.00\%$	$\color{green}8/8$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}216/216$ $\color{green}+100.00\%$

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