build: set dist directory field also on GitHub

Author: Planeshifter

lib/node_modules/@stdlib/_tools/scripts/publish_packages.js

@@ -1136,6 +1136,10 @@ function publish( pkg, clbk ) {
 		} catch ( error ) {
 			debug( 'Encountered an error when attempting to copy a boilerplate test file to `dist`: %s', error.message );
 		}
+		// Add `dist` directory to `package.json`:
+		if ( pkgJSON.directories ) {
+			pkgJSON.directories.dist = './dist';
+		}
 	}
 
 	if ( flags[ 'skip-upload' ] ) {
@@ -1270,9 +1274,6 @@ function publish( pkg, clbk ) {
 			delete pkgJSON.directories.benchmark;
 			delete pkgJSON.directories.example;
 			delete pkgJSON.directories.test;
-			if ( !isTopLevelNS ) {
-				pkgJSON.directories.dist = './dist';
-			}
 		}
 		writeFileSync( pkgJsonPath, JSON.stringify( pkgJSON, null, '  ' ).concat( '\n' ) );