fixed typos

update

[cpp][concurrency]: update lockfree.md

[cpp][cpp20]: fix typos

[cpp][cocurrency]: updates

[cpp][class]: fix typo

[cpp][design]: fix typo

[cpp]: reflection

[cpp][cpp20]: updates

[cpp][cpp17]: fix typo

[cpp][effective-modern-cpp]: some updates

[cpp]: fixed typo

[cpp][cpp20]: delete modules note

[cpp]: reflection

[cpp][effective-modern-cpp]: some modification to type deduction rules