docs: fix missing variable declaration

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---

Author: kgryte

lib/node_modules/@stdlib/array/base/zip2views/README.md

@@ -64,7 +64,7 @@ z[ 1 ].y = 'beep';
 v1 = z[ 1 ].toJSON();
 // returns { 'x': 2, 'y': 'beep' }
 
-y1 = y.slice();
+var y1 = y.slice();
 // returns [ 'a', 'beep', 'c' ]
 ```
 

lib/node_modules/@stdlib/array/base/zip2views/docs/types/index.d.ts

@@ -70,7 +70,7 @@ type PropertyKey = string | number | symbol;
 * v1 = z[ 1 ].toJSON();
 * // returns { 'x': 2, 'y': 'beep' }
 *
-* y1 = y.slice();
+* var y1 = y.slice();
 * // returns [ 'a', 'beep', 'c' ]
 */
 declare function zip2views<T = unknown, U extends PropertyKey = PropertyKey>( arrays: ArrayLike<Collection<T> | AccessorArrayLike<T>>, labels: Collection<U> | AccessorArrayLike<U> ): Array<Record<U, T>>;

lib/node_modules/@stdlib/array/base/zip2views/lib/index.js

@@ -55,7 +55,7 @@
 * v1 = z[ 1 ].toJSON();
 * // returns { 'x': 2, 'y': 'beep' }
 *
-* y1 = y.slice();
+* var y1 = y.slice();
 * // returns [ 'a', 'beep', 'c' ]
 */
 

lib/node_modules/@stdlib/array/base/zip2views/lib/main.js

@@ -71,7 +71,7 @@ var copy = require( '@stdlib/array/base/copy' );
 * v1 = z[ 1 ].toJSON();
 * // returns { 'x': 2, 'y': 'beep' }
 *
-* y1 = y.slice();
+* var y1 = y.slice();
 * // returns [ 'a', 'beep', 'c' ]
 */
 function zip2views( arrays, labels ) {