Demo statt Dummy (engl. Version) (#631)

engl Version von #630

i18n/en/docusaurus-plugin-content-docs/current/faq.mdx

@@ -37,38 +37,11 @@ Here's some ideas:
 
 ### Can I try out evcc without all the components (PV system, charger, ...)?
 
-Sure! We have a selection of "dummy" components that can help fill in gaps. Refer to [demo.yaml](https://github.com/evcc-io/evcc/blob/master/cmd/demo.yaml) for some ideas.
+Sure! We have a selection of "demo" components that can help fill in gaps.
 
-Here's an example using the `const` plugin:
+[Meter](https://docs.evcc.io/en/docs/devices/meters#demo-meter)
 
-```yaml
-meters:
-  - name: dummymeter
-    type: custom
-    power:
-      source: const
-      value: 700 # 700W
-```
-
-And another one using the `script` plugin:
-
-```yaml
-chargers:
-  - name: my_charger
-    type: custom
-    status: # charger status A..F
-      source: script
-      cmd: /bin/sh -c 'echo b'
-    enabled: # charger enabled state (true/false or 0/1)
-      source: script
-      cmd: /bin/sh -c 'echo false'
-    enable: # set charger enabled state (true/false or 0/1)
-      source: script
-      cmd: /bin/sh -c 'echo false'
-    maxcurrent: # set charger max current (A)
-      source: script
-      cmd: /bin/sh -c 'echo 10'
-```
+[Charger](https://docs.evcc.io/en/docs/devices/chargers#demo-charger)
 
 ### Can I use evcc without integrating the PV inverter?