Blaha (#19386)

* clef updates

* update clef

* fix setup

docs/_clef/Setup.md

@@ -1,4 +1,7 @@
-#  Advanced setup
+---
+title: Advanced setup
+---
+
 
 This document describes how Clef can be used in a more secure manner than executing it from your everyday laptop, 
 in order to ensure that the keys remain safe in the event that your computer should get compromised. 

docs/_clef/apis.md

@@ -2,8 +2,6 @@
 title: Communication APIs
 ---
 
-## Communication
-
 ### External API
 
 The signer listens to HTTP requests on `rpcaddr`:`rpcport`, with the same JSONRPC standard as Geth. The messages are
@@ -36,14 +34,16 @@ process output for confirmation-requests.
 
 ### More resoruces
 
-* Changelog for [External API](developers/extapi_changelog.md)
-* Changelog for [UI API](developers/intapi_changelog.md)
-* Documentation about [Datatypes](developers/datatypes.md)
+
+* Changelog for [External API](https://github.com/ethereum/go-ethereum/blob/master/cmd/clef/extapi_changelog.md)
+* Changelog for [UI API](https://github.com/ethereum/go-ethereum/blob/master/cmd/clef/intapi_changelog.md)
+* Documentation about [Datatypes](datatypes.md)
 
 
 ## External API
 
-See the [external api changelog](developers/extapi_changelog.md) for information about changes to this API.
+See the [external api changelog](https://github.com/ethereum/go-ethereum/blob/master/cmd/clef/extapi_changelog.md) for information about changes to this API.
+
 
 ### Encoding
 - number: positive integers that are hex encoded
@@ -536,7 +536,7 @@ See `pythonsigner`, which can be invoked via `python3 pythonsigner.py test` to p
 
 All methods in this API uses object-based parameters, so that there can be no mixups of parameters: each piece of data is accessed by key.
 
-See the [ui api changelog](developers/intapi_changelog.md) for information about changes to this API.
+See the [ui api changelog](https://github.com/ethereum/go-ethereum/blob/master/cmd/clef/intapi_changelog.md) for information about changes to this API.
 
 OBS! A slight deviation from `json` standard is in place: every request and response should be confined to a single line.
 Whereas the `json` specification allows for linebreaks, linebreaks __should not__ be used in this communication channel, to make