docs: fix example

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---

Author: kgryte

lib/node_modules/@stdlib/math/array/tools/unary/README.md

@@ -170,6 +170,7 @@ var dt = dtype( y );
 console.log( dt );
 
 // Print the results:
+logEach( 'sin(%0.5f) = %0.5f', x, y );
 ```
 
 </section>