Update readme to match wiki changes.

Author: bobthecow

README.md

@@ -16,8 +16,8 @@ PsySH is a runtime developer console, interactive debugger and [REPL](https://en
 ## [PsySH manual](https://github.com/bobthecow/psysh/wiki/Home)
 
 ### [💾 Installation](https://github.com/bobthecow/psysh/wiki/Installation)
- * [📕 PHP manual installation](https://github.com/bobthecow/psysh/wiki/PHP-manual)
- * <a class="internal present" href="https://github.com/bobthecow/psysh/wiki/Windows"><img src="https://user-images.githubusercontent.com/53660/40878809-407e8368-664b-11e8-8455-f11602c41dfe.png" width="18"> Windows</a>
+ * [📕 PHP manual](https://github.com/bobthecow/psysh/wiki/PHP-manual)
+ * [🤓 Windows](https://github.com/bobthecow/psysh/wiki/Windows)
 
 ### [🖥 Usage](https://github.com/bobthecow/psysh/wiki/Usage)
  * [✨ Magic variables](https://github.com/bobthecow/psysh/wiki/Magic-variables)