docs: fix parameter description

Author: kgryte

lib/node_modules/@stdlib/array/base/binary2d/lib/main.js

@@ -29,7 +29,7 @@
 *
 * @param {ArrayLikeObject<Array<Collection>>} arrays - array-like object containing two input nested arrays and one output nested array
 * @param {NonNegativeIntegerArray} shape - array shape
-* @param {Callback} fcn - unary callback
+* @param {Callback} fcn - binary callback
 * @returns {void}
 *
 * @example

lib/node_modules/@stdlib/array/base/binary3d/lib/main.js

@@ -29,7 +29,7 @@
 *
 * @param {ArrayLikeObject<Array>} arrays - array-like object containing two input nested arrays and one output nested array
 * @param {NonNegativeIntegerArray} shape - array shape
-* @param {Callback} fcn - unary callback
+* @param {Callback} fcn - binary callback
 * @returns {void}
 *
 * @example

lib/node_modules/@stdlib/array/base/binary4d/lib/main.js

@@ -29,7 +29,7 @@
 *
 * @param {ArrayLikeObject<Array<Collection>>} arrays - array-like object containing two input nested arrays and one output nested array
 * @param {NonNegativeIntegerArray} shape - array shape
-* @param {Callback} fcn - unary callback
+* @param {Callback} fcn - binary callback
 * @returns {void}
 *
 * @example

lib/node_modules/@stdlib/array/base/binary5d/lib/main.js

@@ -29,7 +29,7 @@
 *
 * @param {ArrayLikeObject<Array<Collection>>} arrays - array-like object containing two input nested arrays and one output nested array
 * @param {NonNegativeIntegerArray} shape - array shape
-* @param {Callback} fcn - unary callback
+* @param {Callback} fcn - binary callback
 * @returns {void}
 *
 * @example