docs: update example

Signed-off-by: Athan <[email protected]>

Author: kgryte

lib/node_modules/@stdlib/math/base/special/hypot/README.md

@@ -122,19 +122,13 @@ h = hypot( 5.0, NaN );
 var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
 var hypot = require( '@stdlib/math/base/special/hypot' );
 
-var len;
-var x;
-var y;
-var h;
-var i;
-
-len = 100;
-x = discreteUniform( len, -50, 50 );
-y = discreteUniform( len, -50, 50 );
+var len = 100;
+var x = discreteUniform( len, -50, 50 );
+var y = discreteUniform( len, -50, 50 );
 
-for ( i = 0; i < 100; i++ ) {
-    h = hypot( x[ i ], y[ i ] );
-    console.log( 'h(%d,%d) = %d', x[ i ], y[ i ], h );
+var i;
+for ( i = 0; i < len; i++ ) {
+    console.log( 'h(%d,%d) = %d', x[ i ], y[ i ], hypot( x[ i ], y[ i ] ) );
 }
 ```