Enforce string-formatting with f-strings (#10980)

* First third

* Styling and fix mistake

* Quality

* All the rest

* Treat %s and %d

* typo

* Missing )

* Apply suggestions from code review

Co-authored-by: Lysandre Debut <lysandre@huggingface.co>

Co-authored-by: Lysandre Debut <lysandre@huggingface.co>

utils/link_tester.py

@@ -91,6 +91,6 @@ if __name__ == "__main__":
     if broken_links:
         print("The following links did not respond:")
         for link in broken_links:
-            print("- {}".format(link))
+            print(f"- {link}")
         sys.exit(1)
     print("All links are ok.")