Only use current fix examples for tests in README #633

Author: TobiasNx

README.md

@@ -189,7 +189,7 @@ Content assist is triggered with Ctrl-Space. The input above is also used in `Fi
 
 Run workflows on the web server, passing `data`, `flux`, and `fix`:
 
-[http://localhost:8080/xtext-service/run?data='1'{'a': '5', 'z': 10}&flux=as-lines|decode-formeta|fix|encode-formeta(style="multiline")&fix=map(a,b) map(\_else)](http://localhost:8080/xtext-service/run?data=%271%27{%27a%27:%20%275%27,%20%27z%27:%2010}&flux=as-lines|decode-formeta|fix|encode-formeta(style=%22multiline%22)&fix=map(a,c)%20map(\_else))
+[http://localhost:8080/xtext-service/run?data='1'{'a': '5', 'z': 10}&flux=as-lines|decode-formeta|fix|encode-formeta(style="multiline")&fix=copy_field(a,c)](http://localhost:8080/xtext-service/run?data=%271%27{%27a%27:%20%275%27,%20%27z%27:%2010}&flux=as-lines|decode-formeta|fix|encode-formeta(style=%22multiline%22)&fix=copy_field(a,c))
 
 ## Functions and cookbook