tweaks thanks to @Kocal

Author: weaverryan

frontend/encore/dev-server.rst

@@ -62,15 +62,16 @@ server SSL certificate:
 
     // webpack.config.js
     // ...
+    const path = require('path');
 
     Encore
         // ...
 
-    .configureDevServerOptions(options => {
-        options.https = {
-            pfx: path.join(process.env.HOME, '.symfony/certs/default.p12'),
-        }
-    })
+        .configureDevServerOptions(options => {
+            options.https = {
+                pfx: path.join(process.env.HOME, '.symfony/certs/default.p12'),
+            }
+        })
 
 Then make sure you run the ``dev-server`` with the ``--https`` option:
 
@@ -92,9 +93,9 @@ the ``firewall`` option:
     Encore
         // ...
 
-    .configureDevServerOptions(options => {
-        options.firewall = false;
-    })
+        .configureDevServerOptions(options => {
+            options.firewall = false;
+        })
 
 Hot Module Replacement HMR
 --------------------------

frontend/encore/reactjs.rst

@@ -11,7 +11,7 @@ Using React? First add some dependencies with Yarn:
 .. code-block:: terminal
 
     $ yarn add @babel/preset-react --dev
-    $ yarn add react react-dom prop-types --dev
+    $ yarn add react react-dom prop-types
 
 Enable react in your ``webpack.config.js``: