[Hierarchical BVAR pymc-devs#286] indent with 2 spaces bibtex

Signed-off-by: Nathaniel <[email protected]>

Author: NathanielF

examples/references.bib

@@ -578,10 +578,10 @@ @inproceedings{vanderplas2012astroML
   year          = {2012}
 }
 @online{vieira2022BVAR,
-	title        = {Bayesian Vector Autoregression in PyMC},
-	author       = {Vieira, Ricardo},
-	url          = {https://www.pymc-labs.io/blog-posts/bayesian-vector-autoregression/},
-	urldate      = {2022-12-09}
+  title        = {Bayesian Vector Autoregression in PyMC},
+  author       = {Vieira, Ricardo},
+  url          = {https://www.pymc-labs.io/blog-posts/bayesian-vector-autoregression/},
+  urldate      = {2022-12-09}
 }
 @article{Wagenmakers2010,
   title         = {Bayesian hypothesis testing for psychologists: A tutorial on the Savage–Dickey method},