[Doc] README for Rocky Linux and Clear Linux

Author: cyring

README.md

@@ -246,7 +246,7 @@ yum install kernel-devel
 yum group install "Development Tools"
 ```
 
-## AlmaLinux
+## AlmaLinux, Rocky Linux
 ```sh
 ## as root, install kernel development package and dependencies
 dnf --assumeyes install kernel-devel gcc make git bc
@@ -326,6 +326,8 @@ doas ckms build corefreqk=M.m.r
 gmake CC=clang
 ```
 
+## [Clear Linux](https://github.com/cyring/CoreFreq/wiki/CoreFreq-for-Clear-Linux)
+
 ## [Buildroot](https://github.com/cyring/CoreFreq-buildroot)
 
 ## Q&A