docs(testing): fix base setting in karma shims (#2694)

Author: wardbell

public/docs/_examples/testing/ts/karma-test-shim.js

@@ -28,7 +28,7 @@ var allSpecFiles = Object.keys(window.__karma__.files)
   .filter(isBuiltFile);
 
 System.config({
-  baseURL: '/base',
+  baseURL: 'base',
   // Extend usual application package list with test folder
   packages: { 'testing': { main: 'index.js', defaultExtension: 'js' } },
 

public/docs/_examples/testing/ts/karma.conf.js

@@ -3,7 +3,7 @@ module.exports = function(config) {
 
   var appBase    = 'app/';       // transpiled app JS and map files
   var appSrcBase = 'app/';       // app source TS files
-  var appAssets  = '/base/app/'; // component assets fetched by Angular's compiler
+  var appAssets  = 'base/app/'; // component assets fetched by Angular's compiler
 
   var testBase    = 'testing/';       // transpiled test JS and map files
   var testSrcBase = 'testing/';       // test source TS files