Simple typo fix (GH-24448)

(cherry picked from commit 5f18c22)

Co-authored-by: Andrew Tennikoff <atenni@users.noreply.github.com>

Author: miss-islington

Doc/howto/urllib2.rst

@@ -97,7 +97,7 @@ schemes.  For example, you can make an FTP request like so::
 
 In the case of HTTP, there are two extra things that Request objects allow you
 to do: First, you can pass data to be sent to the server.  Second, you can pass
-extra information ("metadata") *about* the data or the about request itself, to
+extra information ("metadata") *about* the data or about the request itself, to
 the server - this information is sent as HTTP "headers".  Let's look at each of
 these in turn.