Formatting fixes display name doc

Author: JulesBlm

docs/rules/display-name.md

@@ -133,21 +133,27 @@ module.exports = HelloComponent();
 `displayName` allows you to [name your context](https://reactjs.org/docs/context.html#contextdisplayname) object. This name is used in the React dev tools for the context's `Provider` and `Consumer`.
 When `true` this rule will warn on context objects without a `displayName`.
 
-## Rule Details
-
 Examples of **incorrect** code for this rule:
 
 ```jsx
 const Hello = React.createContext();
 ```
 
+```jsx
+const Hello = createContext();
+```
+
 Examples of **correct** code for this rule:
 
 ```jsx
 const Hello = React.createContext();
 Hello.displayName = "HelloContext";
 ```
 
+```jsx
+const Hello = createContext();
+Hello.displayName = "HelloContext";
+```
 
 ## About component detection