tour: No example code of half open slice range

[kaiwulf]

Context: https://tour.golang.org/moretypes/7

"This selects a half-open range which includes the first element, but excludes the last one."

Should there be an example below that line?

[crisman]

There is:

The following expression creates a slice which includes elements 1 through 3 of a:

a[1:4]