chore: documentation is 'stop' not 'shutdown'

Author: richardschneider

README.md

@@ -325,11 +325,10 @@ A complete API definition is in the works. Meanwhile, you can learn how to you u
 - [miscellaneous operations](https://github.com/ipfs/interface-ipfs-core/tree/master/SPEC/MISCELLANEOUS.md)
   - [`ipfs.id([callback])`](https://github.com/ipfs/interface-ipfs-core/tree/master/SPEC/MISCELLANEOUS.md#id)
   - [`ipfs.version([callback])`](https://github.com/ipfs/interface-ipfs-core/tree/master/SPEC/MISCELLANEOUS.md#version)
-  - [`ipfs.shutdown([callback])`](https://github.com/ipfs/interface-ipfs-core/tree/master/SPEC/MISCELLANEOUS.md#shutdown)
   - `ipfs.ping()`
   - `ipfs.init([options], callback)`
   - `ipfs.start([callback])`
-  - `ipfs.stop([callback])`
+  - [`ipfs.stop([callback])`](https://github.com/ipfs/interface-ipfs-core/tree/master/SPEC/MISCELLANEOUS.md#stop)
   - `ipfs.isOnline()`
 
 - [config](https://github.com/ipfs/interface-ipfs-core/tree/master/SPEC/CONFIG.md)