Update README.md

Author: kaustubh-sadekar

CameraCalibration/README.md

@@ -4,7 +4,7 @@ Calibrate your camera using OpenCV.
 
 ## Using the C++ code
 ### Compilation
-To compile the `cameraCalibration.cpp`  and `cameraCalibrationWithUnistortion.cpp` code files, use the following:
+To compile the `cameraCalibration.cpp`  and `cameraCalibrationWithUndistortion.cpp` code files, use the following:
 ```shell
 mkdir build
 cd build
@@ -19,16 +19,16 @@ Refer to the following to use the compiled files:
 
 ```shell
 ./build/cameraCalibration
-./build/cameraCalibrationWithUnistortion
+./build/cameraCalibrationWithUndistortion
 ```
 
 ### Using the python code
 
-Refer to the following to use the `cameraCalibration.py` and `cameraCalibrationWithUnistortion.py` files respectively:
+Refer to the following to use the `cameraCalibration.py` and `cameraCalibrationWithUndistortion.py` files respectively:
 
 ```shell
 python3 cameraCalibration.py
-python3 cameraCalibrationWithUnistortion.py
+python3 cameraCalibrationWithUndistortion.py
 ```
 
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