docs: trace/index.rst: add histogram-design.rst
authorDaniel W. S. Almeida <dwlsalmeida@gmail.com>
Sat, 18 Jul 2020 16:51:06 +0000 (13:51 -0300)
committerJonathan Corbet <corbet@lwn.net>
Thu, 23 Jul 2020 20:15:59 +0000 (14:15 -0600)
commitf2ea95289a79b81aa6c9b0daf8bec60a76b7e78d
treeab68ac83b067f70e20451464d7f0b055a2f15bd4
parent3657c3eba8956260f0ee50419bc2b5fdfd53ec47
docs: trace/index.rst: add histogram-design.rst

Fix the following warning:

Documentation/trace/histogram-design.rst:
WARNING: document isn't included in any toctree

By adding 'histogram-design.rst' to the index.

Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com>
Link: https://lore.kernel.org/r/20200718165107.625847-12-dwlsalmeida@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Documentation/trace/index.rst