Fixed download link

Author: Gammerdinger

README.md

@@ -29,7 +29,7 @@ No installation requirements.
 [GitBash](https://git-scm.com/download/win)  
 
 ### Dataset
-[Shell for Bioinformatics: Dataset](https://www.dropbox.com/scl/fi/sfuftv7qx2fdi37wytep3/unix_lesson.zip?rlkey=hdx8yq1ppp80mqurrcxj67tz&e=1&dl=1)
+[Shell for Bioinformatics: Dataset](https://www.dropbox.com/scl/fi/sfuftv7qx2fdi37wytep3/unix_lesson.zip?rlkey=hdx8yq1ppp80mqurrxcxj67tz&e=1&st=51v17xlz&dl=1)
 
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