test: correct test description typos

Correct several small test description typos for the application builder.

(cherry picked from commit d512635)

Author: clydin

packages/angular/build/src/builders/application/tests/behavior/component-stylesheets_spec.ts

@@ -45,7 +45,7 @@ describeBuilder(buildApplication, APPLICATION_BUILDER_INFO, (harness) => {
       harness.expectFile('dist/browser/main.js').content.not.toContain('variables');
     });
 
-    it('should generater an error for a missing stylesheet with AOT', async () => {
+    it('should generate an error for a missing stylesheet with AOT', async () => {
       await harness.modifyFile('src/app/app.component.ts', (content) => {
         return content.replace('./app.component.css', './not-present.css');
       });
@@ -64,7 +64,7 @@ describeBuilder(buildApplication, APPLICATION_BUILDER_INFO, (harness) => {
       );
     });
 
-    it('should generater an error for a missing stylesheet with JIT', async () => {
+    it('should generate an error for a missing stylesheet with JIT', async () => {
       await harness.modifyFile('src/app/app.component.ts', (content) => {
         return content.replace('./app.component.css', './not-present.css');
       });

packages/angular/build/src/builders/application/tests/behavior/component-templates_spec.ts

@@ -11,7 +11,7 @@ import { APPLICATION_BUILDER_INFO, BASE_OPTIONS, describeBuilder } from '../setu
 
 describeBuilder(buildApplication, APPLICATION_BUILDER_INFO, (harness) => {
   describe('Behavior: "Component Templates"', () => {
-    it('should generater an error for a missing template', async () => {
+    it('should generate an error for a missing template', async () => {
       await harness.modifyFile('src/app/app.component.ts', (content) => {
         return content.replace('./app.component.html', './not-present.html');
       });