Update examples to print consistent error messages

Author: kgryte

lib/node_modules/@stdlib/assert/is-sharedarraybuffer/README.md

@@ -62,7 +62,7 @@ try {
     bool = isSharedArrayBuffer( new SharedArrayBuffer( 10 ) );
     // returns true
 } catch ( err ) {
-    console.log( 'Environment does not support SharedArrayBuffer' );
+    console.log( 'Environment does not support SharedArrayBuffers.' );
 }
 bool = isSharedArrayBuffer( new ArrayBuffer( 10 ) );
 // returns false

lib/node_modules/@stdlib/assert/is-sharedarraybuffer/examples/index.js

@@ -19,7 +19,7 @@ try {
 	console.log( bool );
 	// => true
 } catch ( err ) { // eslint-disable-line no-unused-vars
-	console.log( 'Environment does not support SharedArrayBuffer' );
+	console.log( 'Environment does not support SharedArrayBuffers.' );
 }
 
 bool = isSharedArrayBuffer( new ArrayBuffer( 10 ) );