style(core): typos in docs and tests (angular#32410)

PR angular#32154 introduced `platform` and `any` for `providedIn` and the doc has a minor typo.
Also a test name was not changed accordingly to the refactoring done.

PR Close angular#32410

packages/core/src/di/injectable.ts

@@ -70,7 +70,7 @@ export interface Injectable {
    * - 'root' injector, which will be the application-level injector in most apps.
    * - 'platform' injector, which would be the special singleton platform injector shared by all
    * applications on the page.
-   * - 'any` injector, which would be the injector which receives the resolution. (Note this only
+   * - 'any' injector, which would be the injector which receives the resolution. (Note this only
    * works on NgModule Injectors and not on Element Injector)
    */
   providedIn?: Type<any>|'root'|'platform'|'any'|null;

packages/core/test/view/ng_module_spec.ts

@@ -286,7 +286,7 @@ describe('NgModuleRef_ injector', () => {
       expect(def.scope).toBe(null);
     });
 
-    it('sets isRoot to `null` when INJECTOR_SCOPE is `null`', () => {
+    it('sets scope to `null` when INJECTOR_SCOPE is `null`', () => {
       const def = moduleDef([createProvider(INJECTOR_SCOPE, null)]);
       expect(def.scope).toBe(null);
     });