style(docs-infra): fix docs examples for tslint rule import-spacing (#38143)

This commit updates the docs examples to be compatible with the
`import-spacing` tslint rule.

This is in preparation of updating the docs examples `tslint.json` to
match the one generated for new Angular CLI apps in a future commit.

PR Close #38143

aio/content/examples/component-interaction/src/app/app.module.ts

@@ -1,5 +1,5 @@
 import { NgModule, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
-import { BrowserModule }  from '@angular/platform-browser';
+import { BrowserModule } from '@angular/platform-browser';
 
 import { AppComponent } from './app.component';
 import { AstronautComponent } from './astronaut.component';

aio/content/examples/component-interaction/src/app/astronaut.component.ts

@@ -2,7 +2,7 @@
 import { Component, Input, OnDestroy } from '@angular/core';
 
 import { MissionService } from './mission.service';
-import { Subscription }   from 'rxjs';
+import { Subscription } from 'rxjs';
 
 @Component({
   selector: 'app-astronaut',

aio/content/examples/component-interaction/src/app/countdown-parent.component.ts

@@ -2,8 +2,8 @@
 // #docregion vc
 import { AfterViewInit, ViewChild } from '@angular/core';
 // #docregion lv
-import { Component }                from '@angular/core';
-import { CountdownTimerComponent }  from './countdown-timer.component';
+import { Component } from '@angular/core';
+import { CountdownTimerComponent } from './countdown-timer.component';
 
 // #enddocregion lv
 // #enddocregion vc

aio/content/examples/component-interaction/src/app/mission.service.ts

@@ -1,6 +1,6 @@
 // #docregion
 import { Injectable } from '@angular/core';
-import { Subject }    from 'rxjs';
+import { Subject } from 'rxjs';
 
 @Injectable()
 export class MissionService {

aio/content/examples/component-interaction/src/app/missioncontrol.component.ts

@@ -1,7 +1,7 @@
 // #docregion
-import { Component }          from '@angular/core';
+import { Component } from '@angular/core';
 
-import { MissionService }     from './mission.service';
+import { MissionService } from './mission.service';
 
 @Component({
   selector: 'app-mission-control',

aio/content/examples/component-interaction/src/app/votetaker.component.ts

@@ -1,5 +1,5 @@
 // #docregion
-import { Component }      from '@angular/core';
+import { Component } from '@angular/core';
 
 @Component({
   selector: 'app-vote-taker',