Update README.md

Author: MichaelYochpaz

README.md

@@ -16,12 +16,12 @@ Latest version: [2.0.0](https://github.com/MichaelYochpaz/FileTransformer/releas
 * Data is encrypted before Base64 conversion using AES-GCM with an option to choose an encryption key.
 * Data integrity is insured as part of the AES-GCM algorithm. Trying to restore a file that was altered will fail.
 * Original file's name is embedded within the transformed file, so transformed file's name can be changed without affecting original file.
-* An option to automatically delete source file/s after conversion
+* An option to automatically delete source files after conversion.
 * An option to check for updates.
 
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