remove dotledger (unmaintained, dead links)

- unmaintained since 2020 https://github.com/dotledger/dotledger/commits/master
- demo link leads to error 503
- no activity in issue tracker
- ref. https://github.com/awesome-selfhosted/awesome-selfhosted/issues/2266

README.md

@@ -1356,7 +1356,6 @@ _See also: [awesome-sysadmin/IT Asset Management](https://github.com/awesome-fos
 - [budgetzero](https://github.com/budgetzero/budgetzero) - Free, self-hosted, open-source, envelope-budgeting web and desktop app. ([Demo](https://app.budgetzero.io/budget)) `AGPL-3.0` `Nodejs`
 - [Crater](https://github.com/crater-invoice/crater) - Free & Open Source Invoice App for Freelancers & Small Businesses. ([Demo](https://demo.craterapp.com/)) `AAL` `PHP`
 - [DePay](https://depay.com) - Accept Web3 Payments directly into your wallet. Peer-to-peer, free, self-hosted & open-source. ([Demo](https://depay.com/products/payments), [Source Code](https://github.com/depayfi/widgets)) `MIT` `Nodejs`
-- [Dot Ledger](https://www.dotledger.com/) - Web-based personal finance management tool. ([Demo](https://demo.dotledger.com/), [Source Code](https://github.com/dotledger/dotledger)) `Apache-2.0` `Ruby`
 - [EasyQuickImport](https://github.com/karser/EasyQuickImport) `⚠` - A tool that helps you import transactions, invoices and bills into QuickBooks Desktop from Excel or CSV. `MIT` `PHP`
 - [Economizzer](https://www.economizzer.org/) - An easy and secure system for you to manage your personal money and achieve your goals, and can be accessed by computer, tablet or smartphone. ([Demo](https://github.com/gugoan/economizzer#live-demo), [Source Code](https://github.com/gugoan/economizzer)) `MIT` `PHP`
 - [Family Accounting Tool](https://github.com/nymanjens/facto) - Web-based finance management tool for partners with partially shared expenses. `Apache-2.0` `Scala`