POS=RANGE examples inconsistent with spec

[pdowler]

The spec clearly states that RA is in [0,360] and DEC is in [-90,90] but some POS=RANGE ... examples use -Inf and +Inf (probably copied the idea from use of open ended intervals in other params).

I consider this a bug in the example that should result in a fix and erratum because I recall we explicitly decided to not have services doing range reduction.

[gpdf]

Closed by https://wiki.ivoa.net/twiki/bin/view/IVOA/SIA20Err1 (recorded as accepted 2023-04-05).