docs: copy-constructor vs copy-assignment

[El-even-11]

15445-bootcamp/src/shared_ptr.cpp

Lines 79 to 80 in e2d462b

	// Then, s4 is copy-assigned from s3.
	std::shared_ptr<Point> s4 = s3;

Might use copy-constructor here?

[El-even-11]

// copy-constructed
std::shared_ptr<Point> s4 = s3;

// copy-assigned
std::shared_ptr<Point> s4;
s4 = s3;

[cscourage]

I totally agree with you too.
"std::shared_ptr<Point> s4 = s3; " should be copy-construction, because it is the first time s4 appears.

"std::shared_ptr<Point> s4; // default construction
s4 = s3;" // copy-assignment.
and this is the situation where copy-assignment works.

[skyzh]

yep, this looks like a typo. would you please submit a pull request? thanks!