examples/README.md: add "Lost+found" section

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

examples/README.md

@@ -8,7 +8,6 @@ Distro:
 - [`almalinux.yaml`](./almalinux.yaml): AlmaLinux
 - [`alpine.yaml`](./alpine.yaml): ⭐Alpine Linux
 - [`archlinux.yaml`](./archlinux.yaml): ⭐Arch Linux
-- centos.yaml: ~~CentOS Linux 8~~ ([EOL](https://www.centos.org/centos-linux-eol/))
 - [`centos-stream.yaml`](./centos-stream.yaml): CentOS Stream 8
 - [`debian.yaml`](./debian.yaml): ⭐Debian GNU/Linux
 - [`fedora.yaml`](./fedora.yaml): ⭐Fedora
@@ -47,6 +46,13 @@ Others:
 - [`experimental/9p.yaml`](experimental/9p.yaml): [experimental] use 9p mount type
 - [`experimental/riscv64.yaml`](experimental/riscv64.yaml): [experimental] RISC-V
 
+Lost+found:
+- ~`centos.yaml`~: Removed in Lima v0.8.0, as CentOS 8 reached [EOL](https://www.centos.org/centos-linux-eol/).
+  Replaced by [`rocky.yaml`](./rocky.yaml), [`almalinux.yaml`](./almalinux.yaml), [`oraclelinux.yaml`](./oraclelinux.yaml),
+  and [`centos-stream.yaml`](./centos-stream.yaml).
+- ~`singularity.yaml`~: Moved to [`apptainer-rootful.yaml`](./apptainer-rootful.yaml) in Lima v0.12.1, as Singularity was renamed to Apptainer.
+- ~`experimental/apptainer.yaml`~: Moved to [`apptainer.yaml`](./apptainer.yaml) in Lima v0.12.1
+
 ## Tier 1
 
 The "Tier 1" yamls (marked with ⭐) are regularly tested on the CI.