fix math typos

[omkar-12bits]

• fixed calculation of parameter multiplication typo which was replacing /* which was rendering italic font in calculation.
• fixed typos of math formatter from (\\ 5 \times 5 \\) to \( 5 \times 5 \).
• Might wanna consider Auxiliary Classifiers section \\( 5 \times 5 \\) renders bold highlighted 5x5 in course but in markdown preview \( 5 \times 5 \) , shows bold highlighted text, should i keep this format or should i stick to working format of blog on HF which is \\( 5 \times 5 \\).

[merveenoyan]

@omkar-12bits thanks for opening the PR, you can check out how it renders, some of it didn't render: https://moon-ci-docs.huggingface.co/docs/computer-vision-course/pr_278/en/unit2/cnns/googlenet

[omkar-12bits]

it works now.
seems everyone is having issue of latex rendering without space so that may be some another day ?

[ATaylorAerospace]

Thanks for Updating. It does appear to render correctly now but lets let @merveenoyan also take a quick look to confirm