Update README.md

Signed-off-by: Gururaj Gurram <[email protected]>

Author: gururaj1512

lib/node_modules/@stdlib/stats/base/ndarray/dcovarmtk/README.md

@@ -174,7 +174,7 @@ console.log( ndarray2array( x ) );
 
 // Create second one-dimensional ndarray containing pseudorandom integers drawn from a discrete uniform distribution:
 var ybuf = discreteUniform( 10, -50, 50, opts );
-var y = new ndarray( opts.dtype, ybuf, [ xbuf.length ], [ 1 ], 0, 'row-major' );
+var y = new ndarray( opts.dtype, ybuf, [ ybuf.length ], [ 1 ], 0, 'row-major' );
 console.log( ndarray2array( y ) );
 
 // Specify the known means: