fix: add @Private to native.js

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Author: anandkaranubc

lib/node_modules/@stdlib/stats/base/dists/hypergeometric/pmf/lib/native.js

@@ -28,6 +28,7 @@ var addon = require( './../src/addon.node' );
 /**
 * Evaluates the probability mass function (PMF) for a hypergeometric distribution with population size `N`, subpopulation size `K`, and number of draws `n`.
 *
+* @private
 * @param {number} x - input value
 * @param {NonNegativeInteger} N - population size
 * @param {NonNegativeInteger} K - subpopulation size