Ensure that spec front matter redirect path gets patched too

[chalin]

• Followup to Update opentelemetry-specification version to v1.41.0 #6022
• Ensures that path patch gets applied to path in front matter too. Currently we get a 404:

  $ curl -sIL https://opentelemetry.io/docs/specs/otel/common/attribute-naming/ | grep -E 'HTTP|^date|loc'
  HTTP/2 301 
  date: Wed, 22 Jan 2025 13:51:50 GMT
  location: /docs/specs/semconv/general/naming/
  HTTP/2 404 
  date: Wed, 22 Jan 2025 13:51:50 GMT

This PR also patches the redirect path:

$ curl -sIL https://deploy-preview-6027--opentelemetry.netlify.app/docs/specs/otel/common/attribute-naming/ | grep -E 'HTTP|^date|loc' 
HTTP/2 301 
date: Wed, 22 Jan 2025 13:53:43 GMT
location: /docs/specs/semconv/general/attribute-naming/
HTTP/2 200 
date: Wed, 22 Jan 2025 13:53:43 GMT

Preview: https://deploy-preview-6027--opentelemetry.netlify.app/docs/specs/otel/common/attribute-naming/

[chalin]

Might follow through with:

• [CI] Link check redirect rules? #6028