fix/bloch: use of fig location to display the bloch sphere in documentation

[Fe-r-oz]

Checklist

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Description

Improve the display of the Bloch sphere as location was not provided earlier

Related issues or PRs

This PR aims to be a commit to #480 to correct the display build of bloch sphere via proper use of location parameter.

Additional context

[Fe-r-oz]

Thank you for the fantastic improvements, @ytdHuang! I hope this will fix the display problem!