Improve Windows instructions

[naltatis]

contribution via mail

docs_docs_installation.zip

[micschl]

I updated the cli arguments passed to evcc when installing it as a windows service. "--database" is now specified mandatorily as a workaround for a change in the behavior of the fallback mechanism for determinig the path of evcc.db in version 0.301.0 (see discussion 27597 )

Here's the new version:
docs_docs_installation.zip