[Docs] display-name: improve examples

Author: chiawendt

docs/rules/display-name.md

@@ -12,6 +12,14 @@ var Hello = createReactClass({
     return <div>Hello {this.props.name}</div>;
   }
 });
+
+const Hello = React.memo(({ a }) => {
+  return <>{a}</>
+})
+
+export default ({ a }) => {
+  return <>{a}</>
+}
 ```
 
 Examples of **correct** code for this rule:
@@ -23,6 +31,10 @@ var Hello = createReactClass({
     return <div>Hello {this.props.name}</div>;
   }
 });
+
+const Hello = React.memo(function Hello({ a }) {
+  return <>{a}</>
+})
 ```
 
 ## Rule Options
@@ -37,7 +49,7 @@ var Hello = createReactClass({
 
 When `true` the rule will ignore the name set by the transpiler and require a `displayName` property in this case.
 
-Examples of **correct** code for this rule:
+Examples of **correct** code for `{ ignoreTranspilerName: true }` option:
 
 ```jsx
 var Hello = createReactClass({
@@ -66,7 +78,7 @@ export default function Hello({ name }) {
 Hello.displayName = 'Hello';
 ```
 
-Examples of **incorrect** code for this rule:
+Examples of **incorrect** code for `{ ignoreTranspilerName: true }` option:
 
 ```jsx
 var Hello = createReactClass({