Fix typo

docs/layout.md

@@ -2,7 +2,7 @@
 
 ## Add a new layout
 
-Take a new layout named `secondary` as an example to make the route starting with `seconday` use this layout.
+Take a new layout named `secondary` as an example to make the route starting with `secondary` use this layout.
 
 1. Add related configuration in `src/utils/config.js`. For details, please refer to [layouts](/configuration?id=layouts).
 
@@ -11,11 +11,11 @@ Take a new layout named `secondary` as an example to make the route starting wit
            {
                name: 'primary',
                include: [/.*/],
-               exclude: [/(\/(en|zh))*\/login/, /(\/(en|zh))*\/seconday\/(.*)/],
+               exclude: [/(\/(en|zh))*\/login/, /(\/(en|zh))*\/secondary\/(.*)/],
            },
            {
                name: 'secondary',
-               include: [/(\/(en|zh))*\/seconday\/(.*)/],
+               include: [/(\/(en|zh))*\/secondary\/(.*)/],
            },
    ],
 ```
@@ -40,21 +40,21 @@ Take a new layout named `secondary` as an example to make the route starting wit
    export default ({ children }) => {
      Return (
        <div>
-         <h1>Seconday</h1>
+         <h1>Secondary</h1>
          {children}
        </div>
      )
    }
 ```
 
-4. Add a `seconday/index.js` file to the `src/pages/` directory.
+4. Add a `secondary/index.js` file to the `src/pages/` directory.
 
 ```javascript
    import React from 'react'
 
    export default ({ children }) => {
-     Return <div>Seconday page Content</div>
+     Return <div>Secondary page Content</div>
    }
 ```
 
-5. Finally, start the development mode `npm run start`, open [http://localhost:7000/seconday/](http://localhost:7000/seconday/) and you will see the page for the `seconday` layout.
+5. Finally, start the development mode `npm run start`, open [http://localhost:7000/secondary/](http://localhost:7000/secondary/) and you will see the page for the `secondary` layout.