minor docu fixes

test/settings.wt

@@ -0,0 +1 @@
+set SAFECHAT-URL=http://localhost:8080

test/testcase.wt

@@ -0,0 +1,7 @@
+load SAFECHAT-URL
+expect load SAFECHAT-URL/
+setvalue #user -> 'test'
+setvalue #pwd -> 'test'
+setvalue #pwd2 -> 'test'
+click #createuser
+setvalue form#register[onsubmit="createkeypair(this.elements['user'].value, this.elements['pwd'].value)"]>input#createuser[type="submit"] -> ''