feat: updated readme

README.md

@@ -1123,12 +1123,36 @@ export class App implements OnInit {
 bootstrapApplication(App);
 ```
 
-**switchMapTo** -
+**switchMapTo** - Projects each source value to the same Observable which is flattened multiple times with switchMap in the output Observable.
 
 ```typescript
+import 'zone.js/dist/zone';
+import { Component, OnInit } from '@angular/core';
+import { CommonModule } from '@angular/common';
+import { bootstrapApplication } from '@angular/platform-browser';
+import { fromEvent, switchMapTo, interval } from 'rxjs';
+
+@Component({
+  selector: 'my-app',
+  standalone: true,
+  imports: [CommonModule],
+  template: `
+    <h1>switchMapTo operator</h1>
+  `,
+})
+export class App implements OnInit {
+  ngOnInit() {
+    const clicks = fromEvent(document, 'click');
+    const result = clicks.pipe(switchMapTo(interval(1000)));
+    result.subscribe(x => console.log(x));
+  }
+}
 
+bootstrapApplication(App);
 ```
 
+[Stackblitz Example Link](https://stackblitz.com/edit/stackblitz-starters-wbj1xt?file=src%2Fmain.ts)
+
 **window** -
 
 ```typescript