test: fix typo

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    status: passed
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---

Author: kgryte

lib/node_modules/@stdlib/random/tools/unary/docs/types/test.ts

@@ -254,7 +254,7 @@ import Random = require( './index' );
 	random<number, number>( exponential ); // $ExpectError
 	random<number, number>( exponential, dtypes ); // $ExpectError
 	random<number, number>( exponential, dtypes, dtypes ); // $ExpectError
-	random<number, number>( exponential, dtypes, dtypes, polices, {}, {} ); // $ExpectError
+	random<number, number>( exponential, dtypes, dtypes, policies, {}, {} ); // $ExpectError
 }
 
 // The function returns an instance having a `generate` method which returns an ndarray...