getting-started page instructions unclear

[fge...@gmail.com]

On page https://golang.org/doc/tutorial/getting-started#call :
step 1.3. : visit https://pkg.go.dev/rsc.io/quote#pkg-index
step 1.4. instructs "At the top of this page, note that package quote
is included in the rsc.io/quote module."

How can I "note that package quote is included in the rsc.io/quote module." ?
Which part of "the top of this page" on page
ttps://pkg.go.dev/rsc.io/quote#pkg-index describes the "included"
relation?

Thanks!