fix editLink (#5490)

Author: skshetry

packages/gatsby-theme/src/getEditLink.ts

@@ -1,5 +1,5 @@
 import { externalUrls } from '../consts'
 
 const getEditLink = (sourcePath: string): string =>
-  `${externalUrls.dvcRepo}/blob/main/content${sourcePath}`
+  `${externalUrls.dvcOrgRepo}/blob/main/content${sourcePath}`
 export default getEditLink