Merge #1291

1291: Use 200 status code for healthcheck endpoint  r=MarinPostma a=irevoire

closes  #1282

Co-authored-by: tamo <tamo@meilisearch.com>
Co-authored-by: Irevoire <tamo@meilisearch.com>

meilisearch-http/src/routes/health.rs

@@ -9,5 +9,6 @@ pub fn services(cfg: &mut web::ServiceConfig) {
 
 #[get("/health")]
 async fn get_health() -> Result<HttpResponse, ResponseError> {
-    Ok(HttpResponse::NoContent().finish())
+    let payload = serde_json::json!({ "status": "available" });
+    Ok(HttpResponse::Ok().json(payload))
 }