fix(content): simplify H1 wording for non-technical audience

[wazolab]

Context

PR #55 changed the H1 to "Contrôlez la qualité de votre réplication OpenStreetMap" / "Control the quality of your OpenStreetMap replication". The word "replication" is technical jargon that may not resonate with non-technical visitors (local authorities, tourism offices, transport operators).

Proposed alternatives

Consider a less jargon-heavy formulation, e.g.:

• FR: "Contrôlez la qualité des mises à jour OpenStreetMap que vous recevez"
• EN: "Control the quality of the OpenStreetMap updates you receive"

This keeps the replication concept (updates you receive = replication in plain language) while staying accessible.

Files

• content/fr/index.md (title field in landing-hero)
• content/en/index.md (title field in landing-hero)