outline differences to original rule in docs description and example

Author: ulrichstark

packages/plugins/eslint-plugin-react-x/src/rules/no-unused-props.md

@@ -20,7 +20,10 @@ Warns about unused component prop declarations.
 
 Unused props increase maintenance overhead and may mislead consumers of the component into thinking the prop is required or meaningful, even when it has no effect.
 
-This is the TypeScript-only version of [`eslint-plugin-react/no-unused-prop-types`](https://github.com/jsx-eslint/eslint-plugin-react/blob/master/docs/rules/no-unused-prop-types.md).
+This is the TypeScript-only version of [`eslint-plugin-react/no-unused-prop-types`](https://github.com/jsx-eslint/eslint-plugin-react/blob/master/docs/rules/no-unused-prop-types.md). In contrast to the original rule, this rule
+
+- doesn't support the legacy propTypes syntax
+- combines the used props of one type definition declared by multiple components
 
 ## Examples
 
@@ -52,6 +55,21 @@ function Component(props: Props) {
 }
 ```
 
+```tsx
+interface Props {
+  abc: string; // used by Component1
+  hello: string; // used by Component2
+}
+
+function Component1({ abc }: Props) {
+  return null;
+}
+
+function Component2({ hello }: Props) {
+  return null;
+}
+```
+
 ## Implementation
 
 - [Rule source](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-x/src/rules/no-unused-props.ts)

packages/plugins/eslint-plugin-react-x/src/rules/no-unused-props.spec.ts

@@ -607,7 +607,7 @@ ruleTesterWithTypes.run(RULE_NAME, rule, {
         hello: string;
       }
 
-      function Component({ abc }: Props) {
+      function Component1({ abc }: Props) {
         return null;
       }