doc: simplify urlObject.hash text

Remove "consists of" in favor of "is". Use "fragment identifier" instead
of "fragment" and remove quotes.

PR-URL: #22326
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Bryan English <bryan@bryanenglish.com>

doc/api/url.md

@@ -928,8 +928,8 @@ For example: `'user:pass'`.
 
 #### urlObject.hash
 
-The `hash` property consists of the "fragment" portion of the URL including
-the leading `#` character.
+The `hash` property is the fragment identifier portion of the URL including the
+leading `#` character.
 
 For example: `'#hash'`.