[Docs] Change to json5

Author: nbsp1221

docs/rules/jsx-newline.md

@@ -10,7 +10,7 @@ This is a stylistic rule intended to make JSX code more readable by requiring or
 
 ## Rule Options
 
-```js
+```json5
 ...
 "react/jsx-newline": [<enabled>, { "prevent": <boolean>, "allowMultilines": <boolean> }]
 ...

docs/rules/no-unsafe.md

@@ -56,7 +56,7 @@ const Foo = bar({
 
 ## Rule Options
 
-```js
+```json5
 ...
 "react/no-unsafe": [<enabled>, { "checkAliases": <boolean> }]
 ...

docs/rules/static-property-placement.md

@@ -127,23 +127,23 @@ MyComponent.propTypes = { /*...*/ };
 
 ## Rule Options
 
-```js
+```json5
 ...
 "react/static-property-placement": [<enabled>]  // `static public field` enabled
 ...
 ```
 
 or alternatively:
 
-```js
+```json5
 ...
 "react/static-property-placement": [<enabled>, <string>]
 ...
 ```
 
 or alternatively:
 
-```js
+```json5
 ...
 "react/static-property-placement": [<enabled>, <string>, {
   childContextTypes: <string>,