docs: fix return annotation

Signed-off-by: Athan <[email protected]>

Author: kgryte

lib/node_modules/@stdlib/constants/float32/catalan/README.md

@@ -76,7 +76,7 @@ var bool = ( FLOAT32_CATALAN === 0.9159656167030334 );
 var FLOAT32_CATALAN = require( '@stdlib/constants/float32/catalan' );
 
 console.log( FLOAT32_CATALAN );
-// => 0.9159656167030332
+// => 0.9159656167030334
 ```
 
 </section>