feat: add MS4Science paper reference

[MrtinoRG]

Summary by Sourcery

Update the document to include a new reference to the MS4Science paper, correct acronym formatting, and expand the list of instruction-tuned models with the addition of the Perplexity.AI 7B chat model.

Documentation:

• Add a reference to the MS4Science paper in the introduction section of the document.
• Correct the formatting of the acronym 'MCQ' in the benchmark corpus section.
• Update the list of instruction-tuned models to include the 7B chat model from Perplexity.AI.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request adds a reference to the MS4Science paper and makes minor changes to the text, including updating the list of models used in the study and adjusting some terminology.

File-Level Changes

Change	Details	Files
Added reference to MS4Science paper	Included 'ai4science2023impact' in the list of citations for the ability of models to solve various tasks	src/tex/ms.tex
Updated terminology for clarity	Changed 'multiple-choice questions (MCQ)' to '\glstext{mcq}'	src/tex/ms.tex
Modified list of instruction-tuned models	Changed 'we tested' to 'we used' Removed comma after 'Mixtral-8x7b' Added 'as well as the 7B chat model from Perplexity.AI' Removed 'and LLaMa3 (8B, 70B, 405B)'	src/tex/ms.tex

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[sourcery-ai]

Hey @MrtinoRG - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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