Typo in 14.2.5. Scoping of static option names

In [14.2.5. Scoping of static option names](https://spec.xproc.org/3.1/xproc/#scoping.8):

> In other words, the step options that are in scope in a [p:declare-step](https://spec.xproc.org/3.1/xproc/#p.declare-step) are:

should be

> In other words, the *static* options that are in scope in a [p:declare-step](https://spec.xproc.org/3.1/xproc/#p.declare-step) are: