Add context for page numbers for screenreaders

[StephDriver]

Page numbers need context for screen readers. The following examples were identified in #4194

• Sample 4, item 41. pages: 1-13 is read as "pages one thirteen" because the - is considered invisible punctuation as it could in say 'copy-editing` - this should read as "Pages one to thirteen" or similar. It should be described to be read that way.
• Sample 5.1, item 16. the page numbers at the end of the article details, '1-9' are read as 'one nine' because the screenreader doesn't know that punctuation is important in this place - suggest marking up both to describe these as pages, and to indicate it is a range, e.g. 'pages one to nine' - but need to be careful with implementing this as I believe the UK is 'one to nine' but the US preference may be for 'one through nine'.