apidoc: fix section name

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

Author: yadvr

tools/apidoc/gen_toc.py

@@ -189,8 +189,8 @@
     'Sioc' : 'Sioc',
     'Diagnostics': 'Diagnostics',
     'Management': 'Management',
-    'Backup' : 'Backup',
-    'Restore' : 'Backup'
+    'Backup' : 'Backup and Recovery',
+    'Restore' : 'Backup and Recovery'
     }