Update README.md

new URL for e4thcom

Author: TG9541

README.md

@@ -36,7 +36,7 @@ The original STM8 eForth was written by [Dr. C.H. Ting's eForth](http://www.fort
 
 STM8 eForth is highly configurable: a Forth binary that allows compiling new words to Flash ROM or RAM fits in less than 4K, amd a binary with extended vocabulary requires about 5.5K. Due to the high code density a low cost devices with 8K Flash ROM, like the [STM8S003F3P6](https://www.st.com/resource/en/datasheet/stm8s003f3.pdf), is sufficient for non-trivial applications. If more space is needed a low-cost 32K device can be used, e.g. [STM8S005C6](https://www.st.com/resource/en/datasheet/stm8s005c6.pdf) or [STM8L052C6](https://www.st.com/resource/en/datasheet/stm8l052c6.pdf).
 
-The Forth console uses the STM8 UART or a simulated serial interface for communication with a serial terminal (3-wire full-duplex and 2-wire half-duplex are supported). For console access and programming [e4thcom](https://wiki.forth-ev.de/doku.php/en:projects:e4thcom) is recommended but any serial terminal will work. The console can be configured, even at runtime, to use other [character I/O channels](https://github.com/TG9541/stm8ef/wiki/STM8-eForth-Board-Character-IO), e.g., a keyboard and a character display.
+The Forth console uses the STM8 UART or a simulated serial interface for communication with a serial terminal (3-wire full-duplex and 2-wire half-duplex are supported). For console access and programming [e4thcom](https://forth-ev.de/wiki/en:projects:e4thcom) is recommended but any serial terminal will work. The console can be configured, even at runtime, to use other [character I/O channels](https://github.com/TG9541/stm8ef/wiki/STM8-eForth-Board-Character-IO), e.g., a keyboard and a character display.
 
 The [Wiki on GitHub](https://github.com/TG9541/stm8ef/wiki) covers various topics, e.g. converting low-cost Chinese thermostats, voltmeters or DC/DC-converters into Forth powered embedded control boards.