Keep compatibility with angular <10

Author: bezineb5

src/main/resources/handlebars/typescript-angular/api.module.mustache

@@ -18,7 +18,7 @@ import { {{classname}} } from './{{importPath}}';
     {{/hasMore}}{{/apis}}{{/apiInfo}} ]
 })
 export class ApiModule {
-    public static forRoot(configurationFactory: () => Configuration): ModuleWithProviders<ApiModule> {
+    public static forRoot(configurationFactory: () => Configuration): ModuleWithProviders{{#genericModuleWithProviders}}<ApiModule>{{/genericModuleWithProviders}} {
         return {
             ngModule: ApiModule,
             providers: [ { provide: Configuration, useFactory: configurationFactory } ]