Minor grammar fix

slides/content.md

@@ -43,7 +43,7 @@ Ok, all nice, but...
 Some realistic use cases:
 
 <ul>
-    <li class="fragment fade-up">I have to <b>configure from scratch</b> a new machine, but it's the tenth time I install Linux and I have enough.</li>
+    <li class="fragment fade-up">I have to <b>configure from scratch</b> a new machine, but it's the tenth time I install Linux and I've had enough.</li>
     <li class="fragment fade-up">I have a machine that I have been using for a long time and I want to <b>do a clean install</b>, but I don't remember how I configured it two years ago.</li>
 </ul>