Update apps-yaml.md (#1924)

docs/apps-yaml.md

@@ -1008,23 +1008,26 @@ Predbat can take data directly from Meteo-Alarm feed and use it to trigger keepi
 
 Please look at their web site for more details. The apps.yaml must be configured to select the URL for your country.
 
-The area, event severity and certainty are all regular expressions and can be set to one or multiple values using regular expression syntax.
+The event severity and certainty are all regular expressions and can be set to one or multiple values using regular expression syntax.
 Any unset values are ignored.
 
+Your location (from Home Assistant) is used to filter on alerts that apply only to your area.
+
 Events that match the given criteria will try to keep your battery at the percentage level specified by keep (default 100%) during the entire event period.
 This works by using a much stronger version of best_soc_keep but only for that time period.
 
 Your Predbat status will also have [Alert] in it during the alert time period and the triangle alert symbol will show on your HTML plan for the time period
 of the alert.
 
 ```yaml
+  # Alert feeds - customise to your country and the alert types, severity and keep value
+  # customise to your needs, delete the ones you don't want to trigger on - e.g. remove Amber, Moderate and Possible.
   alerts:
     url: "https://feeds.meteoalarm.org/feeds/meteoalarm-legacy-atom-united-kingdom"
-    area: "South West England"
-    event: "Yellow|Orange|Red"
-    severity: "Severe|Extreme"
-    certainty: "Likely|Expected"
-    keep: 100
+    event: "(Amber|Yellow|Orange|Red).*(Wind|Snow|Fog|Rain|Thunderstorm|Avalanche|Frost|Heat|Coastal event|Flood|Forestfire|Ice|Low temperature|Storm|Tornado|Tsunami|Volcano|Wildfire)"
+    severity: "Moderate|Severe|Extreme"
+    certainty: "Possible|Likely|Expected"
+    keep: 40
 ```
 
 ![image](https://github.com/user-attachments/assets/4d1e0a59-c6f8-4fb1-9c89-51aedfa77755)