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Minor grammar fix. (#900)

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Dave Coleman 2018-07-05 02:57:20 -06:00 committed by Wally B. Feed
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docs/source/tuning.rst
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@ -28,7 +28,7 @@ Two systems
Cartographer can be seen as two separate, but related systems. Cartographer can be seen as two separate, but related systems.
The first one is local SLAM (sometimes also called frontend). The first one is local SLAM (sometimes also called frontend).
Its job is build a locally consistent set of submaps and tie them together, but it will drift over time. Its job is to build a locally consistent set of submaps and tie them together, but it will drift over time.
Most of its options can be found in `trajectory_builder_2d.lua`_ for 2D and `trajectory_builder_3d.lua`_ for 3D. Most of its options can be found in `trajectory_builder_2d.lua`_ for 2D and `trajectory_builder_3d.lua`_ for 3D.
.. _trajectory_builder_2d.lua: https://github.com/googlecartographer/cartographer/blob/aba4575d937df4c9697f61529200c084f2562584/configuration_files/trajectory_builder_2d.lua .. _trajectory_builder_2d.lua: https://github.com/googlecartographer/cartographer/blob/aba4575d937df4c9697f61529200c084f2562584/configuration_files/trajectory_builder_2d.lua