[GR-19691] Update links for Docker images

PullRequest: truffleruby/2818

Author: eregon

CHANGELOG.md

@@ -58,7 +58,7 @@ Compatibility:
 * Allow `Fiber#raise` after `Fiber#transfer` like Ruby 3.0 (#2342).
 * Fix `ObjectSpace._id2ref` for Symbols and frozen String literals (#2358).
 * Implemented `Enumerator::Lazy#filter_map` (#2356).
-* Fix LLVM toolchain issue on macOS 10.13 (#2352, [oracle/graal#3383](https://github.com/oracle/graal/issues/3383)).
+* Fix LLVM toolchain issue on macOS 11.3 (#2352, [oracle/graal#3383](https://github.com/oracle/graal/issues/3383)).
 * Implement `IO#set_encoding_by_bom` (#2372, pawandubey).
 * Implemented `Enumerator::Lazy#with_index` (#2356).
 * Implement `rb_backref_set`.

README.md

@@ -20,8 +20,8 @@ There are four ways to install TruffleRuby releases and nightly builds:
   download. It is meant for users who only want a Ruby implementation and are already
   using a Ruby manager.
 
-* Via Docker: [Oracle Linux-based images](https://github.com/graalvm/container/pkgs/container/truffleruby)
-  and [Debian-based images](https://hub.docker.com/r/flavorjones/truffleruby).
+* Via Docker: [Oracle Linux-based images](https://github.com/graalvm/container/blob/master/truffleruby/README.md)
+  and [Debian-based images](https://github.com/flavorjones/truffleruby/pkgs/container/truffleruby).
 
 * Via the [standalone distribution](doc/user/standalone-distribution.md)
   as a simple binary tarball.