Minor tweak

Author: javiereguiluz

frontend/encore/installation.rst

@@ -55,10 +55,9 @@ is the main config file for both Webpack and Webpack Encore:
 .. code-block:: javascript
 
     var Encore = require('@symfony/webpack-encore');
-    
+
     // Manually configure the runtime environment if not already configured yet by the "encore" command.
     // It's useful when you use tools that rely on webpack.config.js file.
-    
     if (!Encore.isRuntimeEnvironmentConfigured()) {
         Encore.configureRuntimeEnvironment(process.env.NODE_ENV || 'dev');
     }
@@ -83,7 +82,7 @@ is the main config file for both Webpack and Webpack Encore:
         .addEntry('app', './assets/js/app.js')
         //.addEntry('page1', './assets/js/page1.js')
         //.addEntry('page2', './assets/js/page2.js')
-        
+
         // When enabled, Webpack "splits" your files into smaller pieces for greater optimization.
         .splitEntryChunks()
 
@@ -103,26 +102,26 @@ is the main config file for both Webpack and Webpack Encore:
         .enableSourceMaps(!Encore.isProduction())
         // enables hashed filenames (e.g. app.abc123.css)
         .enableVersioning(Encore.isProduction())
-        
+
         // enables @babel/preset-env polyfills
         .configureBabelPresetEnv((config) => {
             config.useBuiltIns = 'usage';
             config.corejs = 3;
         })
-        
+
         // enables Sass/SCSS support
         //.enableSassLoader()
 
         // uncomment if you use TypeScript
         //.enableTypeScriptLoader()
-        
+
         // uncomment to get integrity="..." attributes on your script & link tags
         // requires WebpackEncoreBundle 1.4 or higher
         //.enableIntegrityHashes(Encore.isProduction())
 
         // uncomment if you're having problems with a jQuery plugin
         //.autoProvidejQuery()
-        
+
         // uncomment if you use API Platform Admin (composer require api-admin)
         //.enableReactPreset()
         //.addEntry('admin', './assets/js/admin.js')