fixed typo: XLSA -> XSLA

Author: alanfmw

README.md

@@ -122,7 +122,7 @@ See [Troubleshoot MATLAB Errors in Python](https://www.mathworks.com/help/matlab
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 ## License
-This software is licensed under the MathWorks XLSA License, which is available in the LICENSE.txt file within this repository.
+This software is licensed under the MathWorks XSLA License, which is available in the LICENSE.txt file within this repository.
 
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