Correct example in 9.14 (Lookahead and lookbehind)

Without the `g` flag, we cannot say that the price is skipped.
Without the `\b` assertion, we will have the `6` part of the price in the result.

Author: vsemozhetbyt

9-regular-expressions/14-regexp-lookahead-lookbehind/article.md

@@ -54,7 +54,7 @@ The syntax is: `pattern:X(?!Y)`, it means "search `pattern:X`, but only if not f
 ```js run
 let str = "2 turkeys cost 60€";
 
-alert( str.match(/\d+(?!€)/) ); // 2 (the price is skipped)
+alert( str.match(/\d+\b(?!€)/g) ); // 2 (the price is not matched)
 ```
 
 ## Lookbehind