change final bullet to end with period

Author: joelclermont

components/http_foundation/introduction.rst

@@ -239,7 +239,7 @@ by using the following methods:
   returns the list of accepted languages ordered by descending quality;
 
 * :method:`Symfony\\Component\\HttpFoundation\\Request::getCharsets`:
-  returns the list of accepted charsets ordered by descending quality;
+  returns the list of accepted charsets ordered by descending quality.
 
 Accessing other Data
 ~~~~~~~~~~~~~~~~~~~~