feat: update array TypeScript declarations

PR-URL: #11237
Reviewed-by: Athan Reines <kgryte@gmail.com>

Author: stdlib-bot

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

@@ -62,6 +62,7 @@ import mskreject = require( '@stdlib/array/mskreject' );
 import nans = require( '@stdlib/array/nans' );
 import nansLike = require( '@stdlib/array/nans-like' );
 import nextDataType = require( '@stdlib/array/next-dtype' );
+import nulls = require( '@stdlib/array/nulls' );
 import oneTo = require( '@stdlib/array/one-to' );
 import oneToLike = require( '@stdlib/array/one-to-like' );
 import ones = require( '@stdlib/array/ones' );
@@ -1008,6 +1009,27 @@ interface Namespace {
 	*/
 	nextDataType: typeof nextDataType;
 
+	/**
+	* Creates an array filled with nulls and having a specified length.
+	*
+	* The function recognizes the following data types:
+	*
+	* -   `generic`: generic JavaScript values
+	*
+	* @param length - array length
+	* @param dtype - data type (default: 'generic')
+	* @returns filled array
+	*
+	* @example
+	* var arr = ns.nulls( 2 );
+	* // returns [ null, null ]
+	*
+	* @example
+	* var arr = ns.nulls( 2, 'generic' );
+	* // returns [ null, null ]
+	*/
+	nulls: typeof nulls;
+
 	/**
 	* Generates a linearly spaced numeric array whose elements increment by 1 starting from one.
 	*