Docs: Use Object.prototype in examples (#7755)

* Update: using Object.prototype for no-prototype-builtins example

* Update: adding usages of Object.prototype and Array.prototype to docs

Author: alexreardon

docs/rules/guard-for-in.md

@@ -30,6 +30,9 @@ Examples of **correct** code for this rule:
 /*eslint guard-for-in: "error"*/
 
 for (key in foo) {
+    if (Object.prototype.hasOwnProperty.call(foo, key)) {
+        doSomething(key);
+    }
     if ({}.hasOwnProperty.call(foo, key)) {
         doSomething(key);
     }

docs/rules/no-extra-parens.md

@@ -47,6 +47,8 @@ Examples of **correct** code for this rule with the default `"all"` option:
 
 (0).toString();
 
+(Object.prototype.toString.call());
+
 ({}.toString.call());
 
 (function(){}) ? a() : b();
@@ -121,6 +123,8 @@ Examples of **correct** code for this rule with the `"functions"` option:
 
 (0).toString();
 
+(Object.prototype.toString.call());
+
 ({}.toString.call());
 
 (function(){} ? a() : b());

docs/rules/no-prototype-builtins.md

@@ -23,9 +23,9 @@ Examples of **correct** code for this rule:
 ```js
 /*eslint no-prototype-builtins: "error"*/
 
-var hasBarProperty = {}.hasOwnProperty.call(foo, "bar");
+var hasBarProperty = Object.prototype.hasOwnProperty.call(foo, "bar");
 
-var isPrototypeOfBar = {}.isPrototypeOf.call(foo, bar);
+var isPrototypeOfBar = Object.prototype.isPrototypeOf.call(foo, bar);
 
 var barIsEnumerable = {}.propertyIsEnumerable.call(foo, "bar");
 ```

docs/rules/prefer-rest-params.md

@@ -18,6 +18,11 @@ function foo() {
     console.log(arguments);
 }
 
+function foo(action) {
+    var args = Array.prototype.slice.call(arguments, 1);
+    action.apply(null, args);
+}
+
 function foo(action) {
     var args = [].slice.call(arguments, 1);
     action.apply(null, args);