go/go-std fortunes test throws `Route for fortunes must be at least 9 characters, found '/fortune' instead`

[fushi]

Expected Behavior

Fortunes tests to work on go/go-std

Actual Behavior

Fortunes tests throw Route for fortunes must be at least 9 characters, found '/fortune' instead

Steps to reproduce behavior

tfb --test go-pgx --type fortune --duration 5

[fushi]

Fixed by #6512