Fix typo

Author: leahneukirchen

index.html

@@ -107,7 +107,7 @@ <h1>Rack: a Ruby Webserver Interface</h1>
 
 <p><img id="logo" src="rack-logo.png" alt="Rack powers web applications" /></p>
 
-<p><strong>Rack</strong> provides an minimal interface between webservers supporting
+<p><strong>Rack</strong> provides a minimal interface between webservers supporting
 Ruby and Ruby frameworks.</p>
 
 <h2>News</h2>