Improve docs

Author: eregon

doc/user/installing-libssl.md

@@ -7,7 +7,7 @@ permalink: /reference-manual/ruby/Installinglibssl/
 # Installing `libssl`
 
 TruffleRuby provides the `openssl` module but not the native `libssl` system library that the module uses.
-TruffleRuby supports both versions 1.0.2 and 1.1.0.
+TruffleRuby supports libssl versions 1.0.2 and 1.1.0 (not 3.0.0 currently).
 
 If you experience `openssl`-related errors, it might help to recompile the `openssl` module by running `lib/truffle/post_install_hook.sh`.
 This is done automatically by Ruby managers, and mentioned in the post-install message when installing TruffleRuby via `gu install` in GraalVM.
@@ -19,6 +19,8 @@ export OPENSSL_PREFIX=/path/to/my/openssl-1.1.0
 
 ### RedHat-based: Fedora, Oracle Linux, etc
 
+On Fedora 36, use `openssl1.1-devel` instead.
+
 ```bash
 sudo dnf install openssl-devel
 ```