chore: fix typos

[JamBalaya56562]

Summary

Fix a variety of typographical errors and formatting inconsistencies across sample HTML fixtures, core modules, tests, and demo templates.

Tests:

• Correct spelling in test suite and case descriptions for transformers and optimizer integration tests.

Chores:

• Correct misspellings and extra whitespace in AMP sample HTML files (e.g., constants, initial, compensate, placeholder).
• Fix typos in code comments, JSDoc annotations, log messages, and rename identifier CSS_LENGTH_FORTY_FOUR_PX for consistency.
• Amend e-commerce demo templates to correct JSON comments and form field names (object spelling, message input).
• Update linter rule message and deprecation notices to fix warning text and spelling errors.

[danielrozenberg]

I'd rather not change any of the files under packages/cloudflare-optimizer-scripts as these are test files based on real-world data, so fixing typos in them isn't necessary, but risks breaking existing tests. Can you revert those please?

[danielrozenberg]

Please revert this file as well

[danielrozenberg]

Revert please

[danielrozenberg]

Also all of the files in this directory - basically, all the .html files

[JamBalaya56562]

Thank you for your review.
I have reverted the files which you mentioned.

By the way, CI errors are related to puppeteer settings.
I have raised the PR to fix it.

[danielrozenberg]

I have raised the PR to fix it.

I saw! It's going to be a few days before I can get to it though