Update README.md

packages/gatsby-plugin-less/README.md

@@ -11,35 +11,41 @@ Adds the ability to load and parse Less-flavored CSS.
 Add the plugin to your `gatsby-config.js`.
 
 ```javascript
-plugins: [`gatsby-plugin-less`];
+module.exports = {
+ plugins: [`gatsby-plugin-less`]
+}
 ```
 
 By default this plugin will compile `*.less` and `*.module.less` files. The plugin can also be used with `modifyVars` as it is explained [here](http://lesscss.org/usage/). By defining a javascript object you can overwrite less-variables. This can be useful when using a component library like [antd](https://ant.design/docs/react/introduce).
 
 ```javascript
-plugins: [
- {
- resolve: `gatsby-plugin-less`,
- options: {
- theme: {
- "text-color": `#fff`,
+module.exports = {
+ plugins: [
+ {
+ resolve: `gatsby-plugin-less`,
+ options: {
+ theme: {
+ "text-color": `#fff`,
+ },
  },
  },
- },
-];
+ ]
+};
 ```
 
 Or you can specify a file which exports a object in the same form.
 
 ```javascript
-plugins: [
- {
- resolve: `gatsby-plugin-less`,
- options: {
- theme: `./src/theme.js`,
+module.exports = {
+ plugins: [
+ {
+ resolve: `gatsby-plugin-less`,
+ options: {
+ theme: `./src/theme.js`,
+ },
  },
- },
-];
+ ]
+};
 ```
 
 In file `./src/theme.js`: