Make edit links multilingual-aware across subsites

[cjyabraham]

The following subsites are multilingual and so need the fix:

• [x] TAG App Delivery PR
• [x] Glossary
• [x] OSPO Book
• [x] OSPO Glossary
• [x] TAG Env Sustainability
• [x] Maturity Model

[cjyabraham]

Turns out all these sites already have the necessary code so no action was needed.