fix: add powf and powi to rust dictionary

[koviubi56]

Add/Fix Dictionary

Dictionary: Rust

Description

This PR adds "powf" and "powi" to the Rust dictionary as they are used for exponentiation for floats.

References

• https://doc.rust-lang.org/std/primitive.f32.html#method.powf
• https://doc.rust-lang.org/std/primitive.f64.html#method.powi

Checklist

• By submitting this pull-request, you agree to follow our Code of Conduct
• Verify that the title starts with the correct prefix:
  • fix: - for minor changes like adding words or fixing spelling issues.
  • feat: - for a significant change like adding a whole new set of words to a dictionary.
  • feat!: - for breaking changes, like file format or licensing changes.
  • chore: - for changes that do not impact the content of dictionaries.

[Jason3S]

@koviubi56,

Thank you.