feat: add base.acotdf to namespace

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---

Author: kgryte

lib/node_modules/@stdlib/namespace/lib/namespace/base/a.js

@@ -205,12 +205,27 @@ ns.push({
 	'type': 'Function',
 	'related': [
 		'@stdlib/math/base/special/acot',
+		'@stdlib/math/base/special/acotdf',
 		'@stdlib/math/base/special/acoth',
 		'@stdlib/math/base/special/atand',
 		'@stdlib/math/base/special/cotd'
 	]
 });
 
+ns.push({
+	'alias': 'base.acotdf',
+	'path': '@stdlib/math/base/special/acotdf',
+	'value': require( '@stdlib/math/base/special/acotdf' ),
+	'type': 'Function',
+	'related': [
+		'@stdlib/math/base/special/acotd',
+		'@stdlib/math/base/special/acotf',
+		'@stdlib/math/base/special/acothf',
+		'@stdlib/math/base/special/atandf',
+		'@stdlib/math/base/special/cotdf'
+	]
+});
+
 ns.push({
 	'alias': 'base.acotf',
 	'path': '@stdlib/math/base/special/acotf',