fix:fix the linting error

Author: DivyanshuVortex

lib/node_modules/@stdlib/_tools/docs/www/readme-fragment-file-tree/lib/write.js

@@ -23,6 +23,7 @@
 var path = require( 'path' );
 var logger = require( 'debug' );
 var mkdirp = require( 'mkdirp' );
+var dirname = require( '@stdlib/utils/dirname' );
 var objectKeys = require( '@stdlib/utils/keys' );
 var writeFile = require( '@stdlib/fs/write-file' );
 
@@ -72,7 +73,7 @@ function write( src, dest, db, clbk ) {
 		i += 1;
 
 		file = files[ i ];
-		dpath = path.dirname( file.substring( src.length+1 ) ); // +1 to account for path separator
+		dpath = dirname( file.substring( src.length+1 ) ); // +1 to account for path separator
 		dpath = path.join( dest, dpath );
 
 		debug( 'Creating output directory: %s', dpath );