doc: add missing deprecation labels

Fixes: #20841

PR-URL: #23761
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Shelley Vohr <codebytere@gmail.com>
Reviewed-By: Matheus Marchini <mat@mmarchini.me>

doc/api/crypto.md

@@ -1295,6 +1295,8 @@ added: v0.9.3
 deprecated: v10.0.0
 -->
 
+> Stability: 0 - Deprecated
+
 The default encoding to use for functions that can take either strings
 or [buffers][`Buffer`]. The default value is `'buffer'`, which makes methods
 default to [`Buffer`][] objects.
@@ -1312,6 +1314,8 @@ added: v6.0.0
 deprecated: v10.0.0
 -->
 
+> Stability: 0 - Deprecated
+
 Property for checking and controlling whether a FIPS compliant crypto provider
 is currently in use. Setting to true requires a FIPS build of Node.js.