tweak

Author: alamb

docs/source/library-user-guide/functions/adding-udfs.md

@@ -684,8 +684,7 @@ No function matches the given name and argument types substr(Utf8).
 Scalar UDFs are functions that take a row of data and return a single value. Window UDFs are similar, but they also have
 access to the rows around them. Access to the proximal rows is helpful, but adds some complexity to the implementation.
 
-For background and other considerations, see the
-[User defined Window Functions in DataFusion] blog.
+For background and other considerations, see the [User defined Window Functions in DataFusion] blog.
 
 [user defined window functions in datafusion]: https://datafusion.apache.org/blog/2025/04/19/user-defined-window-functions