[prometheus] Fix typo in alert rule

roles/prometheus/templates/prometheus/alert.rules.yml.j2

@@ -125,7 +125,7 @@ groups:
       description: "https://grafana.crans.org/d/qtbg59mZz/alimentation"
 
   - alert: UpsWrongInputVoltage
-    expr: (upsInputVoltage < 220) or (upsInputVoltage > 240)
+    expr: (upsInputVoltage < 210) or (upsInputVoltage > 250)
     for: 5m
     labels:
       severity: warning
@@ -133,7 +133,7 @@ groups:
       summary: "La tension d'entrée de {{ $labels.instance }} est de {{ $value }}V."
       description: "https://grafana.crans.org/d/qtbg59mZz/alimentation"
 
-  - alert: UpsWrongOututVoltage
+  - alert: UpsWrongOutputVoltage
     expr: (upsOutputVoltage < 225) or (upsOutputVoltage > 235)
     for: 5m
     labels: