Fix grammar errors

[Marcofann]

This pull request addresses several grammar issues across multiple files in the repository. The changes include corrections such as replacing "a" with "an" where appropriate (e.g., before words starting with vowel sounds) and fixing typos or inconsistencies in documentation and comments.

Files Updated

1. chandelier.rs
   • Fixed: "an superfluous" → "a superfluous."
2. path_search.rs
   • Fixed: "a inclusive" → "an inclusive."
3. r1cs.rs
   • Fixed: "a individual" → "an individual."
4. addresses.md
   • Fixed: "a address" → "an address."
5. system_mapping.md
   • Fixed: "an bound" → "a bound."

Checklist Before Review

• Updated grammar errors in all relevant files.
• Verified that no other grammatical inconsistencies remain in the affected areas.
• Added guiding comments for reviewers to verify changes.

Testing Notes

No code changes affecting functionality were made, so no unit tests were added. These changes only affect comments and documentation, ensuring clarity and accuracy.

[hdevalence]

Thanks! The files under proto/src/gen are generated and should not be edited.

[Marcofann]

Hi @hdevalence,

Thank you for the review! I have made the requested changes:

• I restored the original state of the files in the proto/src/gen folder.

Let me know if anything else needs to be adjusted. Thank you!

[erwanor]

Tyty!