Update README.md

Author: AbnormalDistributions

README.md

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 ![NIR](https://github.com/AbnormalDistributions/landsat8_scene_calculator/blob/main/NIR.png)
 
 # Landsat8 Scene Calculator
- This script creates NDVI, SAVI, RBG, and color infrared (NIR) GeoTIFF files using Landsat8 imagery.
+This script creates NDVI, SAVI, RBG, and color infrared (NIR) GeoTIFF files using Landsat8 imagery.
 
 # Scene Locator
 [RemotePixel.ca](https://search.remotepixel.ca)