Change branch names from `master` to `main` for projects that changed their branch names

pkg/README.md: Remove prometheus pkg

Update README_tr.md

Remove https://github.com/prometheus/prometheus/tree/main/pkg example as it doesn't exist anymore

Update README_ru.md

feat: add README_it

Making russian translation more readable

Update french readme

Update README.md

Update cmd README.md

Improve and fix grammar issues (Turkish)

Update Readme_ja.md

Fixed some grammar issues improved the text, (Now it seems more native).

satellity repo does not have cmd folder

Adding go-ehtereum project  as one of the biggest open-source projects to file

Highlight not official core project

add Turkish translation

Adds Russian translation for README.md

Fix markdown formatting

Romanian translation

Add portuguese translation

There are two typos in the document.fix typos

Fix markdown formatting

Update readme.md

Change "어플리케이션" to "애플리케이션"