docs: es6 lodash examples

docs/source/api/utilities/_.md

@@ -27,19 +27,19 @@ cy._.keys(obj)  // Errors, cannot be chained off 'cy'
 
 # Examples
 
-## `_.forEach`
+## `_.each`
 
 ```javascript
-// set local reference to lodash
-var _ = Cypress._
+// set local reference to lodash and jquery
+const { _, $ } = Cypress
 
 cy.get("li").then(function($li){
-  // use the _.forEach function
-  _.forEach($li.get(), function(el, i){
+  // use the _.each function
+  _.each($li.get(), function(el, i){
 
-    // use Cypress.$(...) to wrap the DOM element
+    // use $(...) to wrap the DOM element
     // into a jQuery object
-    expect(Cypress.$(el).parent()).to.match("ul")
+    expect($(el).parent()).to.match("ul")
   })
 })
 ```
@@ -49,8 +49,9 @@ cy.get("li").then(function($li){
 ```javascript
 cy
   // use the _.chain, _.map, _.take, and _.value functions
-  .request('http://jsonplaceholder.typicode.com/users').then(function(response){
-    var ids = Cypress._.chain(response.body).map('id').take(3).value()
+  .request('http://jsonplaceholder.typicode.com/users')
+  .then((response) => {
+    const ids = Cypress._.chain(response.body).map('id').take(3).value()
 
     expect(ids).to.deep.eq([1, 2, 3])
   })