feat: spread services execution

docs/ecolyo/Technical/Services/enedis_halfhour_monthly_analysis.md

 # Enedis half-hour monthly analysis
 
-The service will run everyday 3rd of month at 8.00 am, as defined in the manifest:
+The service will run everyday 3rd of month between 10am and 12pm (noon), as defined in the manifest:
 
 ```json
 "enedisHalfHourMonthlyAnalysis": {
   "type": "node",
   "file": "services/enedisHalfHourMonthlyAnalysis/ecolyo.js",
-  "trigger": "@cron 0 0 8 3 * *"
+  "trigger": "@monthly on the 3 between 10am and 12pm",
 }
 ```
 

docs/ecolyo/Technical/Services/monthly_report_notification.md

 # Monthly report notification
 
-This service will run the 3rd of each month at 10.00 am, as defined in the manifest:
+This service will run the 3rd of each month between 12pm (noon) and 2pm, as defined in the manifest:
 
 ```json
 "monthlyReportNotification": {
   "type": "node",
   "file": "services/monthlyReportNotification/ecolyo.js",
-  "trigger": "@cron 0 0 10 3 * *"
+  "trigger": "@monthly on the 3 between 12pm and 2pm",
 }
 ```