Correct DESCRIPTION to point to correct theming repository

Author: VisruthSK

DESCRIPTION

@@ -52,7 +52,7 @@ Suggests:
     testthat (>= 3.0)
 VignetteBuilder: 
     knitr
-Config/Needs/website: VisruthSK/pkgdownConfig
+Config/Needs/website: stan-dev/pkgdown-config
 Config/testthat/edition: 3
 Config/testthat/parallel: true
 Config/testthat/start-first: loo_subsampling_cases, loo_subsampling