docs: fix example

Signed-off-by: Athan <kgryte@gmail.com>

Author: kgryte

lib/node_modules/@stdlib/blas/base/wasm/dznrm2/README.md

@@ -259,25 +259,18 @@ var oneTo = require( '@stdlib/array/one-to' );
 var Complex128Array = require( '@stdlib/array/complex128' );
 var dznrm2 = require( '@stdlib/blas/base/wasm/dznrm2' );
 
-function main() {
-    var xbuf;
-    var out;
-    var x;
-    var N;
-
-    // Specify a vector length:
-    N = 5;
+// Specify a vector length:
+var N = 5;
 
-    // Create an input array:
-    xbuf = oneTo( N*2, 'float64' );
-    x = new Complex128Array( xbuf.buffer );
+// Create an input array:
+var xbuf = oneTo( N*2, 'float64' );
+var x = new Complex128Array( xbuf.buffer );
 
-    // Perform computation:
-    out = dznrm2.ndarray( N, x, 1, 0 );
+// Perform computation:
+var out = dznrm2.ndarray( N, x, 1, 0 );
 
-    // Print the result:
-    console.log( out );
-}
+// Print the result:
+console.log( out );
 ```
 
 </section>