python: fix an inconsistent index label

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11970 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter08/python.xml

@@ -17,7 +17,7 @@
   <title>Python-&python-version;</title>
 
   <indexterm zone="ch-system-Python">
-    <primary sortas="a-python">python</primary>
+    <primary sortas="a-Python">Python</primary>
   </indexterm>
 
   <sect2 role="package">