docs/content/commands/preview/index.md: fix broken link

2021-03-05 16:46:13 -05:00 · 2021-03-05 16:46:13 -05:00 · cc80e32744
--- a/docs/content/commands/preview/index.md
+++ b/docs/content/commands/preview/index.md
@ -38,7 +38,7 @@ system, install the [wwt_data_formats Python package][wwtdf] and use the
 [wwtdatatool preview] and/or [wwtdatatool serve] commands. That package provides
 a variety of other tools that are helpful for manipulating WTML files.

-[wwtdf]: https://wwt-data-formats.readthedocs.io/index.html
+[wwtdf]: https://wwt-data-formats.readthedocs.io/
 [wwtdatatool preview]: https://wwt-data-formats.readthedocs.io/en/latest/cli/preview.html
 [wwtdatatool serve]: https://wwt-data-formats.readthedocs.io/en/latest/cli/serve.html