link fix

README.md

@@ -10,7 +10,7 @@ reveal.js is an open source HTML presentation framework. It enables anyone with
 The framework comes with a broad range of features including [nested slides](https://revealjs.com/vertical-slides/), [Markdown support](https://revealjs.com/markdown/), [Auto-Animate](https://revealjs.com/auto-animate/), [PDF export](https://revealjs.com/pdf-export/), [speaker notes](https://revealjs.com/speaker-view/), [LaTeX support](https://revealjs.com/math/), [syntax highlighted code](https://revealjs.com/code/) and much more.
 
 <h1>
-  <a href="https://revealjs.revealjs.com/installation" style="font-size: 3em;">Get Started</a>
+  <a href="https://revealjs.com/installation" style="font-size: 3em;">Get Started</a>
 </h1>
 
 ## Documentation