diff --git a/slides/index.Rmd b/slides/index.Rmd
index afbfa99..cfb8f83 100644
--- a/slides/index.Rmd
+++ b/slides/index.Rmd
@@ -101,7 +101,7 @@ We're in for 2 hours of **fun**!
 
 Clone this repository with the RStudio IDE or via the command line.
 
-```shell
+```bash
 git clone https://github.com/RinteRface/unleash-shiny-2021.git
 cd unleash-shiny-2021
 ```
@@ -110,8 +110,8 @@ Then run `renv::restore()` to install the dependencies.
 
 Importantly, this workshop makes heavy use of npm (Node's Package Manager), it comes with the installation of node.js:
 
-- You can manually install node.js: nodejs.org/en/download/.
-- You can also use package managers: nodejs.org/en/download/package-manager/.
+- You can manually install node.js: [nodejs.org/en/download/](nodejs.org/en/download/).
+- You can also use package managers: [nodejs.org/en/download/package-manager/](nodejs.org/en/download/package-manager/).
 
 ---
 class: break center middle
diff --git a/slides/index.html b/slides/index.html
index 8a57ee2..5560d26 100644
--- a/slides/index.html
+++ b/slides/index.html
@@ -4,7 +4,6 @@
     <title>Unleash Shiny</title>
     <meta charset="utf-8" />
     <meta name="author" content="David Granjon (Novartis) &amp; John Coene (Opifex)" />
-    <script src="libs/header-attrs-2.11/header-attrs.js"></script>
     <link href="libs/tile-view-0.2.6/tile-view.css" rel="stylesheet" />
     <script src="libs/tile-view-0.2.6/tile-view.js"></script>
     <link href="libs/animate.css-3.7.2/animate.xaringan.css" rel="stylesheet" />
@@ -97,7 +96,7 @@
 
 Clone this repository with the RStudio IDE or via the command line.
 
-```shell
+```bash
 git clone https://github.com/RinteRface/unleash-shiny-2021.git
 cd unleash-shiny-2021
 ```
@@ -106,8 +105,8 @@
 
 Importantly, this workshop makes heavy use of npm (Node's Package Manager), it comes with the installation of node.js:
 
-- You can manually install node.js: nodejs.org/en/download/.
-- You can also use package managers: nodejs.org/en/download/package-manager/.
+- You can manually install node.js: [nodejs.org/en/download/](nodejs.org/en/download/).
+- You can also use package managers: [nodejs.org/en/download/package-manager/](nodejs.org/en/download/package-manager/).
 
 ---
 class: break center middle