correct some sentences

Signed-off-by: ismetatabay <[email protected]>

docs/how-to-guides/integrating-autoware/creating-vehicle-and-sensor-description/calibrating-sensors/calibrating-sensors.md

@@ -7,7 +7,8 @@ localization,
 and planning stack.
 These sensors must be calibrated correctly,
 and their positions must be defined at `sensor_kit_description` and `individual_params` packages.
-In order to do that, we will use TIER IV' [CalibrationTools](https://github.com/tier4/CalibrationTools) repository.
+In this tutorial,
+we will use TIER IV's [CalibrationTools](https://github.com/tier4/CalibrationTools) repository for the calibration.
 
 ## Setting of sensor_kit_base_link position according to the base_link
 

docs/how-to-guides/integrating-autoware/creating-vehicle-and-sensor-description/calibrating-sensors/intrinsic-camera-calibration.md

@@ -3,7 +3,8 @@
 ## Overview
 
 Intrinsic camera calibration is the process
-of determining the internal parameters of a camera that affect how it captures images.
+of determining the internal parameters of a camera
+which will be used when projecting 3D information into images.
 These parameters include focal length, optical center, and lens distortion coefficients.
 In order to perform camera Intrinsic calibration,
 we will use TIER IV's [Intrinsic Camera Calibrator](https://github.com/tier4/CalibrationTools/blob/tier4/universe/sensor/docs/how_to_intrinsic_camera.md) tool.

docs/how-to-guides/integrating-autoware/creating-vehicle-and-sensor-description/calibrating-sensors/lidar-lidar-calibration.md

@@ -5,8 +5,6 @@
 In this tutorial,
 we will explain lidar-lidar calibration over [mapping-based lidar-lidar calibration tool](https://github.com/tier4/CalibrationTools/blob/tier4/universe/sensor/docs/how_to_extrinsic_mapping_based.md) of TIER IV's
 CalibrationTools.
-Also,
-[map-based lidar-lidar calibration method](https://github.com/tier4/CalibrationTools/blob/tier4/universe/sensor/docs/how_to_extrinsic_map_based.md) included in the TIER IV's tools.
 
 !!! warning
 

docs/how-to-guides/integrating-autoware/creating-vehicle-and-sensor-description/calibrating-sensors/manual-calibration.md

@@ -3,15 +3,15 @@
 ## Overview
 
 In this section, we will use [Extrinsic Manual Calibration](https://github.com/tier4/CalibrationTools/blob/tier4/universe/sensor/docs/how_to_extrinsic_manual.md)
-for extrinsic calibrating our sensors.
-At this point, we can't completely accurate calibrations results for usage,
+for extrinsic calibration of our sensors.
+After this process, we won't get accurate calibration results for final use,
 but we will have an initial calibration for other tools.
 For example, in the lidar-lidar or camera-lidar calibration phase,
 we will need initial calibration for getting accurate and successful calibration results.
 
 We need a sample bag file for the calibration process
 which includes raw lidar topics and camera topics.
-So our tutorial_vehicle's recorded topics should like this:
+The following shows an example of a bag file used for calibration:
 
 ??? note "ROS 2 Bag example of our calibration process"
 
@@ -42,9 +42,7 @@ cd <YOUR-OWN-SENSOR-KIT-NAME> # i.e. for our guide, it will ve cd tutorial_vehic
 touch manual.launch.xml manual_sensor_kit.launch.xml
 ```
 
-The created `manual.launch.xml` and `manual_sensor_kit.launch.xml` are version of sample sensor kit
-[aip_x1](https://github.com/tier4/CalibrationTools/tree/tier4/universe/sensor/extrinsic_calibration_manager/launch/aip_x1)
-provided from TIER IV.
+We will be modifying these `manual.launch.xml` and `manual_sensor_kit.launch.xml` by using TIER IV's sample sensor kit [aip_x1](https://github.com/tier4/CalibrationTools/tree/tier4/universe/sensor/extrinsic_calibration_manager/launch/aip_x1)
 
 So, we can start modifying `manual.launch.xml`,
 please open this file on a text editor which will you prefer (code, gedit etc.).