Updates parameter descriptions and JSON construction

Updates descriptions of Jenkins parameters for clarity.

Refactors the construction of the JSON string containing URLs to
improve readability.

Jenkinsfile

@@ -2,8 +2,8 @@ pipeline {
     agent { label 'windows' }
 
     parameters {
-        string(name: 'DISCORD_USER_ID', defaultValue: '378262266723696651', description: 'ID Discord pour les DMs')
-        choice(name: 'BUILD_TYPE', choices: ['Both', 'Debug', 'Release'], description: 'Type de build à lancer')
+        string(name: 'DISCORD_USER_ID', defaultValue: '378262266723696651', description: 'ID Discord pour recevoir le DM')
+        choice(name: 'BUILD_TYPE', choices: ['Both', 'Debug', 'Release'], description: 'Type de build à exécuter')
     }
 
     options {
@@ -99,8 +99,8 @@ pipeline {
                     urlsList << "${env.BUILD_URL}artifact/builds/KhaoticEngineReborn_Release.zip"
                 }
 
-                // Construire correctement tableau JSON d'URLs sous forme de chaîne à injecter dans curl
-                def urlsJson = "[${urlsList.collect { "\"${it}\"" }.join(',')}]"
+                def urlsJson = urlsList.collect { "\"${it}\"" }.join(',')
+                urlsJson = "[${urlsJson}]"
 
                 bat """
                     curl -X POST http://192.168.1.131:2500/ci-notify ^