Remove @ from telemetry angular import in code samples

Author: tonybaroneee

docs-devsite/telemetry_angular.firebaseerrorhandler.md

@@ -74,7 +74,7 @@ Basic usage:
 
 ```typescript
 import { ErrorHandler } from '@angular/core';
-import { FirebaseErrorHandler } from '@firebase/telemetry-angular';
+import { FirebaseErrorHandler } from 'firebase/telemetry-angular';
 
 @NgModule({
   // ...
@@ -96,7 +96,7 @@ Providing telemetry options:
 
 ```typescript
 import { ErrorHandler } from '@angular/core';
-import { FirebaseErrorHandler } from '@firebase/telemetry-angular';
+import { FirebaseErrorHandler } from 'firebase/telemetry-angular';
 
 @NgModule({
   // ...

packages/telemetry/src/angular/index.ts

@@ -37,7 +37,7 @@ export * from '../public-types';
  * Basic usage:
  * ```typescript
  * import { ErrorHandler } from '@angular/core';
- * import { FirebaseErrorHandler } from '@firebase/telemetry-angular';
+ * import { FirebaseErrorHandler } from 'firebase/telemetry-angular';
  *
  * @NgModule({
  *   // ...
@@ -56,7 +56,7 @@ export * from '../public-types';
  * Providing telemetry options:
  * ```typescript
  * import { ErrorHandler } from '@angular/core';
- * import { FirebaseErrorHandler } from '@firebase/telemetry-angular';
+ * import { FirebaseErrorHandler } from 'firebase/telemetry-angular';
  *
  * @NgModule({
  *   // ...