fix method name in example code
diff --git a/Doc/lib/libcgi.tex b/Doc/lib/libcgi.tex
index add322d..a14717a 100644
--- a/Doc/lib/libcgi.tex
+++ b/Doc/lib/libcgi.tex
@@ -225,7 +225,7 @@
example this code:
\begin{verbatim}
-user = form.getvalue("user").toupper()
+user = form.getvalue("user").upper()
\end{verbatim}
The problem with the code is that you should never expect that a
@@ -272,7 +272,7 @@
\begin{verbatim}
import cgi
form = cgi.FieldStorage()
-user = form.getfirst("user", "").toupper() # This way it's safe.
+user = form.getfirst("user", "").upper() # This way it's safe.
for item in form.getlist("item"):
do_something(item)
\end{verbatim}