Use non-deprecated options key

Author: jdreesen

frontend/encore/babel.rst

@@ -25,10 +25,10 @@ Need to extend the Babel configuration further? The easiest way is via
         }, {
             // node_modules is not processed through Babel by default
             // but you can whitelist specific modules to process
-            include_node_modules: ['foundation-sites'],
+            includeNodeModules: ['foundation-sites'],
 
             // or completely control the exclude rule (note that you
-            // can't use both "include_node_modules" and "exclude" at
+            // can't use both "includeNodeModules" and "exclude" at
             // the same time)
             exclude: /bower_components/
         })