Update index.md (#1074)

aviadra · web-flow · commit 00b6ba0abc05 · 2025-04-12T14:11:06.000-04:00
added "s" so that compiler is happy
diff --git a/src/docs/devices/Sonoff-Dual-R3/index.md b/src/docs/devices/Sonoff-Dual-R3/index.md
@@ -162,7 +162,7 @@ uart:
 
 sensor:  
   - platform: cse7761
-    update_interval: 21
+    update_interval: 21s
     voltage:
       name: 'Voltage'
     current_1:
