doc: add missing deprecated badges in fs.md

PR-URL: #57384
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: y-hsgw

doc/api/fs.md

@@ -1022,6 +1022,8 @@ behavior is similar to `cp dir1/ dir2/`.
 deprecated: v10.0.0
 -->
 
+> Stability: 0 - Deprecated
+
 * `path` {string|Buffer|URL}
 * `mode` {integer}
 * Returns: {Promise} Fulfills with `undefined` upon success.
@@ -2994,6 +2996,8 @@ changes:
                  it will emit a deprecation warning with id DEP0013.
 -->
 
+> Stability: 0 - Deprecated
+
 * `path` {string|Buffer|URL}
 * `mode` {integer}
 * `callback` {Function}
@@ -5354,6 +5358,8 @@ Synchronous version of [`fs.futimes()`][]. Returns `undefined`.
 deprecated: v0.4.7
 -->
 
+> Stability: 0 - Deprecated
+
 * `path` {string|Buffer|URL}
 * `mode` {integer}