Change to correct internal link in README.md (#212)

Author: live-small

README.md

@@ -17,9 +17,9 @@ Built by [@RIP21](https://twitter.com/rip212) 👨‍💻
   - [Options](#options)
   - [Hotkeys](#hotkeys)
   - [Custom preview rendering example](#custom-preview-rendering-example)
-  - [Events / Additional event listeners for events of CodeMirror](#events---additional-event-listeners-for-events-of-codemirror)
+  - [Events / Additional event listeners for events of CodeMirror](#events--additional-event-listeners-for-events-of-codemirror)
   - [Autosaving](#autosaving)
-  - [Retrieve `easymde`, `codemirror` or `cursor` info to be able to manipulate it.](#retrieve--easymde----codemirror--or--cursor--info-to-be-able-to-manipulate-it)
+  - [Retrieve `easymde`, `codemirror` or `cursor` info to be able to manipulate it.](#retrieve-easymde-codemirror-or-cursor-info-to-be-able-to-manipulate-it)
   - [Basic testing](#basic-testing)
 - [API](#api)
   - [Props](#props)