Fix grammatical errors

[Marcofann]

Files and Changes:

1. destructs.rs

   • Corrected: "an where" → "and where" to fix grammatical inaccuracy and improve clarity.

2. canonic.rs

   • Corrected: "a either" → "an either" to align with proper article usage before a word starting with a vowel sound.

3. compute.rs

   • Corrected: "a ap-change" → "an ap-change" (twice) for proper article usage before words starting with a vowel sound.

4. analyzer.rs

   • Corrected: "a enum" → "an enum" for proper article usage before words starting with a vowel sound.

[reviewable-StarkWare]

This change is 

[orizi]

Reviewed 4 of 4 files at r1, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @Marcofann)

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crates/cairo-lang-semantic/src/expr/inference/canonic.rs line 91 at r1 (raw file):

/// Mapping between canonical space and inference space.
/// Created by an either canonicalizing or embedding a trait.

Suggestion:

/// Created by either canonicalizing or embedding a trait.

[Marcofann]

Hi @orizi

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

• Corrected the comment by removing the unnecessary "an" before "either", as suggested. The comment now reads:
  /// Created by either canonicalizing or embedding a trait.

Let me know if anything else is needed!

[orizi]

Reviewed 1 of 1 files at r2, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @Marcofann)