[TypeScript - Angular] Add syntax highlighting to code blocks and correct heading levels in README.mustache

modules/openapi-generator/src/main/resources/typescript-angular/README.mustache

@@ -1,34 +1,35 @@
-## {{npmName}}@{{npmVersion}}
+# {{npmName}}@{{npmVersion}}
 
 {{{appDescription}}}
 
 {{#version}}The version of the OpenAPI document: {{{.}}}{{/version}}
 
-### Building
+## Building
 
 To install the required dependencies and to build the typescript sources run:
-```
+
+```console
 npm install
 npm run build
 ```
 
-### publishing
+## Publishing
 
-First build the package then run ```npm publish dist``` (don't forget to specify the `dist` folder!)
+First build the package then run `npm publish dist` (don't forget to specify the `dist` folder!)
 
-### consuming
+## Consuming
 
 Navigate to the folder of your consuming project and run one of next commands.
 
 _published:_
 
-```
+```console
 npm install {{npmName}}@{{npmVersion}} --save
 ```
 
 _without publishing (not recommended):_
 
-```
+```console
 npm install PATH_TO_GENERATED_PACKAGE/dist.tgz --save
 ```
 
@@ -37,26 +38,26 @@ _It's important to take the tgz file, otherwise you'll get trouble with links on
 _using `npm link`:_
 
 In PATH_TO_GENERATED_PACKAGE/dist:
-```
+
+```console
 npm link
 ```
 
 In your project:
-```
+
+```console
 npm link {{npmName}}
 ```
 
 __Note for Windows users:__ The Angular CLI has troubles to use linked npm packages.
 Please refer to this issue https://github.com/angular/angular-cli/issues/8284 for a solution / workaround.
 Published packages are not effected by this issue.
 
-
-#### General usage
+### General usage
 
 In your Angular project:
 
-
-```
+```typescript
 // without configuring providers
 import { {{apiModuleClassName}} } from '{{npmName}}';
 import { HttpClientModule } from '@angular/common/http';
@@ -75,7 +76,7 @@ import { HttpClientModule } from '@angular/common/http';
 export class AppModule {}
 ```
 
-```
+```typescript
 // configuring providers
 import { {{apiModuleClassName}}, {{configurationClassName}}, {{configurationParametersInterfaceName}} } from '{{npmName}}';
 
@@ -95,7 +96,7 @@ export function apiConfigFactory (): {{configurationClassName}} {
 export class AppModule {}
 ```
 
-```
+```typescript
 // configuring providers with an authentication service that manages your access tokens
 import { {{apiModuleClassName}}, {{configurationClassName}} } from '{{npmName}}';
 
@@ -120,7 +121,7 @@ import { {{apiModuleClassName}}, {{configurationClassName}} } from '{{npmName}}'
 export class AppModule {}
 ```
 
-```
+```typescript
 import { DefaultApi } from '{{npmName}}';
 
 export class AppComponent {
@@ -131,11 +132,12 @@ export class AppComponent {
 Note: The {{apiModuleClassName}} is restricted to being instantiated once app wide.
 This is to ensure that all services are treated as singletons.
 
-#### Using multiple OpenAPI files / APIs / {{apiModuleClassName}}s
+### Using multiple OpenAPI files / APIs / {{apiModuleClassName}}s
 In order to use multiple `{{apiModuleClassName}}s` generated from different OpenAPI files,
 you can create an alias name when importing the modules
 in order to avoid naming conflicts:
-```
+
+```typescript
 import { {{apiModuleClassName}} } from 'my-api-path';
 import { {{apiModuleClassName}} as OtherApiModule } from 'my-other-api-path';
 import { HttpClientModule } from '@angular/common/http';
@@ -154,20 +156,21 @@ export class AppModule {
 }
 ```
 
-
 ### Set service base path
+
 If different than the generated base path, during app bootstrap, you can provide the base path to your service.
 
-```
+```typescript
 import { BASE_PATH } from '{{npmName}}';
 
 bootstrap(AppComponent, [
     { provide: BASE_PATH, useValue: 'https://your-web-service.com' },
 ]);
 ```
+
 or
 
-```
+```typescript
 import { BASE_PATH } from '{{npmName}}';
 
 @NgModule({
@@ -179,19 +182,20 @@ import { BASE_PATH } from '{{npmName}}';
 export class AppModule {}
 ```
 
+### Using @angular/cli
 
-#### Using @angular/cli
 First extend your `src/environments/*.ts` files by adding the corresponding base path:
 
-```
+```typescript
 export const environment = {
   production: false,
   API_BASE_PATH: 'http://127.0.0.1:8080'
 };
 ```
 
 In the src/app/app.module.ts:
-```
+
+```typescript
 import { BASE_PATH } from '{{npmName}}';
 import { environment } from '../environments/environment';
 
@@ -219,6 +223,7 @@ pass an arrow-function or method-reference to the `encodeParam` property of the
 (see [General Usage](#general-usage) above).
 
 Example value for use in your Configuration-Provider:
+
 ```typescript
 new Configuration({
     encodeParam: (param: Param) => myFancyParamEncoder(param),