doc: list supported MODP groups explicitly

Instead of referring users to perl to find information about supported
MODP groups in crypto_groups.h, explicitly list the groups with their
respective strengths and with references to the defining RFC sections.

Refs: nodejs#43896

Author: tniessen

doc/api/crypto.md

@@ -1181,20 +1181,16 @@ const { createDiffieHellmanGroup } = require('node:crypto');
 const dh = createDiffieHellmanGroup('modp1');
 ```
 
-The name (e.g. `'modp1'`) is taken from [RFC 2412][] (modp1 and 2) and
-[RFC 3526][]:
-
-```console
-$ perl -ne 'print "$1\n" if /"(modp\d+)"/' src/node_crypto_groups.h
-modp1  #  768 bits
-modp2  # 1024 bits
-modp5  # 1536 bits
-modp14 # 2048 bits
-modp15 # etc.
-modp16
-modp17
-modp18
-```
+The following groups are supported:
+
+* `'modp1'` (768 bits, [RFC 2409][] Section 6.1)
+* `'modp2'` (1024 bits, [RFC 2409][] Section 6.2)
+* `'modp5'` (1536 bits, [RFC 3526][] Section 2)
+* `'modp14'` (2048 bits, [RFC 3526][] Section 3)
+* `'modp15'` (3072 bits, [RFC 3526][] Section 4)
+* `'modp16'` (4096 bits, [RFC 3526][] Section 5)
+* `'modp17'` (6144 bits, [RFC 3526][] Section 6)
+* `'modp18'` (8192 bits, [RFC 3526][] Section 7)
 
 ## Class: `ECDH`
 
@@ -6105,6 +6101,7 @@ See the [list of SSL OP Flags][] for details.
 [Nonce-Disrespecting Adversaries]: https://github.com/nonce-disrespect/nonce-disrespect
 [OpenSSL's SPKAC implementation]: https://www.openssl.org/docs/man1.1.0/apps/openssl-spkac.html
 [RFC 1421]: https://www.rfc-editor.org/rfc/rfc1421.txt
+[RFC 2409]: https://www.rfc-editor.org/rfc/rfc2409.txt
 [RFC 2412]: https://www.rfc-editor.org/rfc/rfc2412.txt
 [RFC 2818]: https://www.rfc-editor.org/rfc/rfc2818.txt
 [RFC 3526]: https://www.rfc-editor.org/rfc/rfc3526.txt