Summary: Gatling adds interactive demos

Why It Matters: This makes it easier for people to see how Gatling works.

What Changed:

• "Interactive demos" were added to the "Resources" section. This new section offers step-by-step demos to show how Gatling fits into workflows.
• The "Login" link changed from auth.gatling.io/auth/realms/gatling/protocol/openid-connect/auth to www.gatling.io/sign-in.
• The "Try Enterprise Edition for free" link changed from auth.gatling.io/auth/realms/gatling/protocol/openid-connect/registrations to www.gatling.io/sign-up.
• A "Terms of service" link was added to the footer.
• The content for several customer stories was updated with new details (e.g., SNCF Connect & Tech, Aircall, Criteo, Interdiscount, Korem, Sonepar, AidenAI, Tape à l’œil, Sophos).