remove deprecated getJson

Signed-off-by: saurabhraghuvanshii <saurabhsraghuvanshi@gmail.com>

Author: saurabhraghuvanshii

layouts/partials/feature-info.html

@@ -1,7 +1,9 @@
 {{ $currentPage := .Page.Permalink }}
 {{ $features := .Site.Data.feature_data }}
 {{ if not $features }}
-{{ $features = getJSON "feature_data.json" }}
+{{ with readFile "data/feature_data.json" }}
+{{ $features = . | transform.Unmarshal }}
+{{ end }}
 {{ end }}
 
 {{ $featuresByUrl := dict }}