Missed a few "dicom2stl.py"s

Author: dave3d

README.md

@@ -6,7 +6,7 @@ dicom2stl
 
 Tutorial: [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/dave3d/dicom2stl/main?filepath=examples%2FTutorial.ipynb)
 
-dicom2stl.py is a script that takes a [Dicom](https://www.dicomstandard.org/about/)
+dicom2stl is a script that takes a [Dicom](https://www.dicomstandard.org/about/)
 series and generates a STL surface mesh.
 
 Written by David T. Chen from the National Institute of Allergy & Infectious Diseases (NIAID),
@@ -29,7 +29,7 @@ Once you have a DICOM image series zip you can run your first script (Ensure tha
 
 This will create a .stl file named "output.stl" that extracted tissue from the DICOM image series.
 
-How dicom2stl.py works
+How dicom2stl works
 ======================
 The script starts by reading in a series of 2-d images or a simple 3-d image.
 It can read any format supported by ITK.  If the input name is a zip file or