Please review below for any doc changes needed

At https://doc.rust-lang.org/rust-by-example/primitives/literals.html
It says We need to tell the compiler the type of the literals we use.
I felt that is must or have to ( though it dint say so ), otherwise may tell or could tell can be used

However, it works without telling the type
There is no need to tell, it can infer.
So doc should be changed?

==

// Integer addition
println!("1 + 2 = {}", 1 + 2);       // =============== i wrote this
println!("1 + 2 = {}", 1u32 + 2);

1 + 2 = 3 // =============== i wrote this
1 + 2 = 3

==