Update README.md

Author: wambugucoder

README.md

@@ -14,7 +14,7 @@ Run `ng generate component component-name` to generate a new component. You can
 
 Run `ng build` to build the project. The build artifacts will be stored in the `dist/` directory. Use the `--prod` flag for a production build.
 
-## Running unit tests
+## Running unit tests.
 
 Run `ng test` to execute the unit tests via [Karma](https://karma-runner.github.io).