Invalid URL in doc examples

[jaroslavtyc]

In the API versioning description page https://dev.mailjet.com/email/reference/overview/versioning/ (not part of this repo :memo: ) there are invalid URLs with uppercase version letters

• https://api.mailjet.com/**V**3/
• https://api.mailjet.com/**V**3/REST
• https://api.mailjet.com/**V**3.1/send

I have copied those versions to my project and spent an hour to find out what is going on - server responses 404

• 404 because of uppercase V3 in URL

  curl -I --request GET \
  --url https://api.mailjet.com/V3/REST/contactslist \
  --header "Accept: application/json"
  HTTP/2 404 
  date: Mon, 09 Sep 2024 11:11:31 GMT
  content-type: text/html
  content-length: 162

• proper 401 with lowercase v3 in URL

  curl -I --request GET \
  --url https://api.mailjet.com/v3/REST/contactslist \
  --header "Accept: application/json"
  HTTP/2 401 
  date: Mon, 09 Sep 2024 11:12:12 GMT
  content-type: text/html
  www-authenticate: Basic realm="Provide an apiKey and secretKey"

Please manage the https://dev.mailjet.com/email/reference/overview/versioning/ to list valid URLs. Thank you.

Note: docs in this PHP repository are fine, all examples (I saw) have valid URLs. It is only about the generic docs.