fix: small fix

Author: sergey-kras

packages/devextreme-schematics/src/add-layout/index.ts

@@ -160,7 +160,9 @@ function modifyFileRule(path: string, callback: (source: SourceFile) => Change[]
     if (!source) {
       return host;
     }
+
     const changes = callback(source);
+
     return applyChanges(host, changes, path);
   };
 }

packages/devextreme-schematics/src/install/index.ts

@@ -19,6 +19,7 @@ import { getProjectName } from '../utility/project';
 import { PatchNodePackageInstallTask } from '../utility/patch';
 
 export default function(options: any): Rule {
+
   return chain([
     (host: Tree) => addDevExtremeDependency(host, { dxversion: options.dxversion }),
     (host: Tree) => addDevExtremeCSS(host, { project: options.project }),