DOC: Add TemplateFlow's citation into bibtex file

fmriprep/data/boilerplate.bib

@@ -1,7 +1,9 @@
 @article{fmriprep1,
     author = {Esteban, Oscar and Markiewicz, Christopher and Blair, Ross W and Moodie, Craig and Isik, Ayse Ilkay and Erramuzpe Aliaga, Asier and Kent, James and Goncalves, Mathias and DuPre, Elizabeth and Snyder, Madeleine and Oya, Hiroyuki and Ghosh, Satrajit and Wright, Jessey and Durnez, Joke and Poldrack, Russell and Gorgolewski, Krzysztof Jacek},
     title = {{fMRIPrep}: a robust preprocessing pipeline for functional {MRI}},
-    year = {2018},
+    volume = {16},
+    pages = {111--116},
+    year = {2019},
     doi = {10.1038/s41592-018-0235-4},
     journal = {Nature Methods}
 }
@@ -15,6 +17,16 @@ @article{fmriprep2
     journal = {Software}
 }
 
+@article{templateflow,
+    author = {Ciric, R. and Thompson, William H. and Lorenz, R. and Goncalves, M. and MacNicol, E. and Markiewicz, C. J. and Halchenko, Y. O. and Ghosh, S. S. and Gorgolewski, K. J. and Poldrack, R. A. and Esteban, O.},
+    title = {{TemplateFlow}: {FAIR}-sharing of multi-scale, multi-species brain models},
+    volume = {19},
+    pages = {1568--1571},
+    year = {2022},
+    doi = {10.1038/s41592-022-01681-2},
+    journal = {Nature Methods}
+}
+
 @article{nipype1,
     author = {Gorgolewski, K. and Burns, C. D. and Madison, C. and Clark, D. and Halchenko, Y. O. and Waskom, M. L. and Ghosh, S.},
     doi = {10.3389/fninf.2011.00013},