fix(demos): add IBM Plex Sans Condensed to the core demo site

Author: theiliad

packages/core/demo/index.html

@@ -18,7 +18,7 @@
 	<link rel="icon" type="image/png" href="favicon-16x16.png" sizes="16x16" />
 	<link rel="shortcut icon" href="favicon.ico" />
 
-	<link href="https://fonts.googleapis.com/css?family=IBM+Plex+Sans:400,500,600,700" rel="stylesheet">
+	<link href="https://fonts.googleapis.com/css?family=IBM+Plex+Sans:400,500,600,700|IBM+Plex+Sans+Condensed:400" rel="stylesheet">
 
 	<link href="https://unpkg.com/carbon-components@10.1.0/css/carbon-components.css" rel="stylesheet">
 </head>