DOC: Fix Typo in Documentation

[Prince-ES]

What's wrong with the existing documentation

Description

Found minor spelling errors in backend/backend_python/directory-structure.md.

Details

The following typos were found:

• Line 5: heirarchy → hierarchy
• Line 24: accross → across
• Line 32: handeling → handling

I can submit a PR to correct these if approved.

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[github-actions]

👋 Thanks for opening this issue! The maintainers will review it shortly. Till then, do not open any PR. This is a strict rule we like to follow around here :)

[Prince-ES]

Can you please take a look @rahulharpal1603, The fix is ready.

[Phanindra899]

Hi @rahulharpal1603
I have noticed a few typo and wording inconsistencies in the current content. I’ll review the entire section carefully and correct them to ensure the language is clear, consistent, and naturally written. I’ll also make sure the final version reads professionally and doesn’t feel auto-generated.

Please let me know if there are any specific style guidelines or tone preferences I should follow.If this works for you, could you please assign this task to me? Also, if you notice any specific issues or areas that need improvement, feel free to point them out so I can address them properly.