Update README.md

README.md

@@ -170,7 +170,7 @@ Environment Variables
     * MONGO_GRIDFS_TOTAL_LIMIT: Total capacity limit of MongoDB GridFS (bytes). default: `Infinity`
 * **Option to integrate with external systems**
     * HACKMD_URI: URI to connect to [HackMD(CodiMD)](https://hackmd.io/) server.
-        * **This server must load the GROWI agent. [Here's how to prepare it](https://docs.growi.org/management-cookbook/integrate-with-hackmd).**
+        * **This server must load the GROWI agent. [Here's how to prepare it](https://docs.growi.org/guide/admin-cookbook/integrate-with-hackmd.html).**
     * HACKMD_URI_FOR_SERVER: URI to connect to [HackMD(CodiMD)](https://hackmd.io/) server from GROWI Express server. If not set, `HACKMD_URI` will be used.
     * PLANTUML_URI: URI to connect to [PlantUML](http://plantuml.com/) server.
     * BLOCKDIAG_URI: URI to connect to [blockdiag](http://http://blockdiag.com/) server.
@@ -208,7 +208,7 @@ Missing a Feature?
 You can *request* a new feature by [submitting an issue][issues] to our GitHub
 Repository. If you would like to *implement* a new feature, firstly please submit the issue with your proposal to make sure we can confirm it. Please clarify what kind of change you would like to propose.
 
-* For a **Major Feature**, firstly open an issue and outline your proposal so it can be discussed. 
+* For a **Major Feature**, firstly open an issue and outline your proposal so it can be discussed.  
 It also allows us to coordinate better, prevent duplication of work and help you to create the change so it can be successfully accepted into the project.
 * **Small Features** can be created and directly [submitted as a Pull Request][pulls].