docs: add return annotation

Author: kgryte

lib/node_modules/@stdlib/blas/base/cscal-wasm/README.md

@@ -390,6 +390,7 @@ cscal.ndarray( N, z, x, 1, 0 );
 
 // Print the results:
 console.log( reinterpretComplex64( x, 0 ) );
+// => <Float32Array>[ -2.0, 6.0, -2.0, 14.0, -2.0, 22.0, -2.0, 30.0, -2.0, 38.0 ]
 ```
 
 </section>

lib/node_modules/@stdlib/blas/base/cscal-wasm/examples/index.js

@@ -45,6 +45,7 @@ function main() {
 
 	// Print the results:
 	console.log( reinterpretComplex64( x, 0 ) );
+	// => <Float32Array>[ -2.0, 6.0, -2.0, 14.0, -2.0, 22.0, -2.0, 30.0, -2.0, 38.0 ]
 }
 
 main();