docs: update examples

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

Author: kgryte

lib/node_modules/@stdlib/stats/nanrange-by/README.md

@@ -113,19 +113,22 @@ var x = array( [ -1.0, 2.0, -3.0, 4.0 ], {
 });
 // returns <ndarray>[ [ -1.0, 2.0 ], [ -3.0, 4.0 ] ]
 
-var y = nanrangeBy( x, {
+var opts = {
     'dims': [ 0 ]
-}, clbk );
+};
+var y = nanrangeBy( x, opts, clbk );
 // returns <ndarray>[ 200.0, 200.0 ]
 
-y = nanrangeBy( x, {
+opts = {
     'dims': [ 1 ]
-}, clbk );
+};
+y = nanrangeBy( x, opts, clbk );
 // returns <ndarray>[ 300.0, 700.0 ]
 
-y = nanrangeBy( x, {
+opts = {
     'dims': [ 0, 1 ]
-}, clbk );
+};
+y = nanrangeBy( x, opts, clbk );
 // returns <ndarray>[ 700.0 ]
 ```
 
@@ -144,22 +147,25 @@ var x = array( [ -1.0, 2.0, -3.0, 4.0 ], {
 });
 // returns <ndarray>[ [ -1.0, 2.0 ], [ -3.0, 4.0 ] ]
 
-var y = nanrangeBy( x, {
+var opts = {
     'dims': [ 0 ],
     'keepdims': true
-}, clbk );
+};
+var y = nanrangeBy( x, opts, clbk );
 // returns <ndarray>[ [ 200.0, 200.0 ] ]
 
-y = nanrangeBy( x, {
+opts = {
     'dims': [ 1 ],
     'keepdims': true
-}, clbk );
+};
+y = nanrangeBy( x, opts, clbk );
 // returns <ndarray>[ [ 300.0 ], [ 700.0 ] ]
 
-y = nanrangeBy( x, {
+opts = {
     'dims': [ 0, 1 ],
     'keepdims': true
-}, clbk );
+};
+y = nanrangeBy( x, opts, clbk );
 // returns <ndarray>[ [ 700.0 ] ]
 ```
 
@@ -177,9 +183,10 @@ var x = array( [ -1.0, 2.0, -3.0 ], {
     'dtype': 'generic'
 });
 
-var y = nanrangeBy( x, {
+var opts = {
     'dtype': 'float64'
-}, clbk );
+};
+var y = nanrangeBy( x, opts, clbk );
 // returns <ndarray>[ 500.0 ]
 
 var dt = String( getDType( y ) );