fix: lint error

Author: Neerajpathak07

lib/node_modules/@stdlib/stats/base/dists/beta/pdf/src/main.c

@@ -77,8 +77,8 @@
 * // returns NaN
 */
 double stdlib_base_dists_beta_pdf( const double x, double alpha, const double beta ) {
-    double out;
-    if (
+	double out;
+	if (
 		stdlib_base_is_nan( x ) ||
 		stdlib_base_is_nan( alpha ) ||
 		stdlib_base_is_nan( beta ) ||