Correct incorrect "it's" to "its".
diff --git a/Doc/lib/libcgitb.tex b/Doc/lib/libcgitb.tex
index dab34c5..c686fe6 100644
--- a/Doc/lib/libcgitb.tex
+++ b/Doc/lib/libcgitb.tex
@@ -13,7 +13,7 @@
\index{tracebacks!in CGI scripts}
The \module{cgitb} module provides a special exception handler for Python
-scripts. (It's name is a bit misleading. It was originally designed to
+scripts. (Its name is a bit misleading. It was originally designed to
display extensive traceback information in HTML for CGI scripts. It was
later generalized to also display this information in plain text.) After
this module is activated, if an uncaught exception occurs, a detailed,