[DOC] Update neurostars link in sphinx site
The link to pybids issues on NeuroStars yields [an incorrect page](https://neurostars.org/t/pybids). This fixes the link to point at [issues tagged `pybids`](https://neurostars.org/tags/pybids).
@@ -50,7 +50,7 @@ Finding help
:Mailing lists and forums:
* Don't hesitate to ask questions about pybids on `NeuroStars
- <https://neurostars.org/t/pybids/>`_.
+ <https://neurostars.org/tags/pybids>`_.
* You can find help with neuroimaging in Python (file I/O,
neuroimaging-specific questions) via the nipy user group:
