[docs] Fix various spelling and grammatical mistakes in comments and templates

[ApurveKaranwal]

Describe the bug
A number of spelling mistakes, grammatical errors, and typos are present in various comments, docstrings, and templates across the codebase. While these do not affect the functionality of the system, fixing them improves code readability, documentation quality, and maintainability.

Steps To Reproduce
Steps to reproduce the behavior:

1. Scan the codebase using codespell (e.g., codespell --skip="*.svg,*.min.js,*.min.css" .) or manually read through the source files.
2. Observe spelling mistakes such as commiting, taks, atleast, deafult, and acommodate across various Python and HTML files.
3. Observe grammatical issues in comments, such as Selenium tests does not support websocket connections in test_selenium.py and remove the this block in base.py.
4. See error (Incorrect spellings and grammar).

Expected behavior
The comments, docstrings, and templates should use correct spelling and grammar (e.g., committing, tasks, at least, default, accommodate).

Screenshots
Not applicable.

System Information:

• OS: Any
• Python Version: Any
• Django Version: Any
• Browser and Browser Version (if applicable): N/A

[openwisp-companion]

This issue has been automatically assigned to @ApurveKaranwal who opened PR #1399 to address it. 🎯

[nemesifier]

Usually I don't accept PRs like this #1399. I do not endorse this kind of AI usage, we risk getting hundred of similar PRs in different repos, which creates unnecessary burden for maintainers for almost zero value.

I will accept this one due to tue amount of typos found by the AI but please refrain from doing the same in all other repositories.

[nemesifier]

This was getting out of hand and had to close it.