message: docs(migrations): follow-up readme fixes
  Addresses a couple of notes from that came in after the PR was merged.
  PR Close
diff: @@ -121,29 +121,29 @@ A module is considered "safe to remove" if it:
  * Has no `declarations`.
  * Has no `providers`.
  * Has no `bootstrap` components.
  -* Has no `imports` that reference a `ModuleWithProviders` symbol.
  +* Has no `imports` that reference a `ModuleWithProviders` symbol or a module that can't be removed.
  * Has no class members. Empty construstors are ignored.
  **Before:**
  ```typescript
  -// declarer.module.ts
  +// importer.module.ts
  @NgModule({
  - declarations: [FooComp, BarPipe],
  + imports: [FooComp, BarPipe],
  exports: [FooComp, BarPipe]
  })
  -export class DeclarerModule {}
  +export class ImporterModule {}
  ```
  ```typescript
  // configurer.module.ts
  -import {DeclarerModule} from './declarer.module';
  +import {ImporterModule} from './importer.module';
  -console.log(DeclarerModule);
  +console.log(ImporterModule);
  @NgModule({
  - imports: [DeclarerModule],
  - exports: [DeclarerModule],
  + imports: [ImporterModule],
  + exports: [ImporterModule],
  providers: [{provide: FOO, useValue: 123}]
  })
  export class ConfigurerModule {}
  @@ -151,18 +151,18 @@ export class ConfigurerModule {}
  ```typescript
  // index.ts
  -export {DeclarerModule, ConfigurerModule} from './modules/index';
  +export {ImporterModule, ConfigurerModule} from './modules/index';
  ```
  **After:**
  ```typescript
  -// declarer.module.ts
  +// importer.module.ts
  // Deleted!
  ```
  ```typescript
  // configurer.module.ts
  -console.log(/* TODO(standalone-migration): clean up removed NgModule reference manually */ DeclarerModule);
  +console.log(/* TODO(standalone-migration): clean up removed NgModule reference manually */ ImporterModule);
  @NgModule({
  imports: [],
  @@ -174,7 +174,7 @@ export class ConfigurerModule {}
  ```typescript
  // index.ts
  -export {DeclarerModule} from './modules/index';
  +export {ConfigurerModule} from './modules/index';
  ```
  ### Switch to standalone bootstrapping API
  