Added replace from , to . for float handling

Since the website saves numbers with , the sensor ends up with "," when trying to use it in automations float does not work.
So i thought i added this if somone ells uses the example

source/_components/sensor.scrape.markdown

@@ -126,7 +126,7 @@ sensor:
     resource: https://elen.nu/timpriser-pa-el-for-elomrade-se3-stockholm/
     name: Electricity price
     select: ".elspot-content"
-    value_template: '{{ value.split(" ")[0] }}'
+    value_template: '{{ ((value.split(" ")[0]) | replace (",", ".")) }}'
     unit_of_measurement: "öre/kWh"
 ```
 {% endraw %}