Fix typo in lesson 2

Author: Noratrieb

lesson-2.html

@@ -181,7 +181,7 @@ <h2>Lesson 2: Arguments</h2>
         <section data-step="3" class="step">
           <p>
             Good job! You have now learnt about the mangling of basic types. In
-            the next lesson, we will use there types as template arguments.
+            the next lesson, we will use these types as template arguments.
           </p>
           <div class="center">
             <a href="lesson-3.html" class="action-button">