Assuming the link points to a legitimate .txt file named windows10.txt with useful system tweaks:
When it comes to text files (.txt), Bit.ly doesn't have a direct integration. However, you can still use Bit.ly to shorten URLs mentioned in a .txt file. Here are a few scenarios: bit ly windows 10 txt
Exploring bit.ly/windows10txt: A Guide to Windows Activation Scripts Assuming the link points to a legitimate
If you want to save your shortened URL to a text file: bit ly windows 10 txt