changes made to grammar check function (Sourcery refactored)

[sourcery-ai]

Pull Request #69 refactored by Sourcery.

Since the original Pull Request was opened as a fork in a contributor's
repository, we are unable to create a Pull Request branching from it.

To incorporate these changes, you can either:

1. Merge this Pull Request instead of the original, or

2. Ask your contributor to locally incorporate these commits and push them to
   the original Pull Request

   Incorporate changes via command line

   git fetch https://github.com/neomatrix369/nlp_profiler pull/69/head
   git merge --ff-only FETCH_HEAD
   git push

NOTE: As code is pushed to the original Pull Request, Sourcery will
re-run and update (force-push) this Pull Request with new refactorings as
necessary. If Sourcery finds no refactorings at any point, this Pull Request
will be closed automatically.

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[sourcery-ai]

Function grammar_check_score refactored with the following changes:

• Simplify comparison to string length (simplify-str-len-comparison)
• Replaces an empty collection equality with a boolean operation (simplify-empty-collection-comparison)

[sourcery-ai]

Function grammar_quality refactored with the following changes:

• Remove unnecessary casts to int, str, float or bool (remove-unnecessary-cast)

[sourcery-ai]

Sourcery Code Quality Report

✅  Merging this PR will increase code quality in the affected files by 1.01%.

Quality metrics	Before	After	Change
Complexity	1.94 ⭐	1.94 ⭐	0.00
Method Length	35.25 ⭐	34.75 ⭐	-0.50 👍
Working memory	4.88 ⭐	4.56 ⭐	-0.32 👍
Quality	89.10% ⭐	90.11% ⭐	1.01% 👍

Other metrics	Before	After	Change
Lines	37	36	-1

Changed files	Quality Before	Quality After	Quality Change
nlp_profiler/high_level_features/grammar_quality_check.py	89.10% ⭐	90.11% ⭐	1.01% 👍

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation

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