Adjust assertion in http.txt for the error trace test case.

The error message handling was modified starting from 4.3.
See crate/crate#10355

Author: kovrus

src/crate/client/doctests/http.txt

@@ -201,5 +201,5 @@ will be provided::
     ...     trace = 'TRACE: ' + str(e.error_trace)
 
     >>> print(trace)
-    TRACE: SQLActionException: 400 Bad Request 4000 SQLParseException: ... mismatched input 'error' expecting {<EOF>, ...
+    TRACE: ... mismatched input 'error' expecting {<EOF>, ...
     at io.crate...