chore: update doc to add libclang-dev deps (anza-xyz#5033)

Author: HaoranYi

README.md

@@ -36,12 +36,12 @@ On Linux systems you may need to install libssl-dev, pkg-config, zlib1g-dev, pro
 On Ubuntu:
 ```bash
 $ sudo apt-get update
-$ sudo apt-get install libssl-dev libudev-dev pkg-config zlib1g-dev llvm clang cmake make libprotobuf-dev protobuf-compiler
+$ sudo apt-get install libssl-dev libudev-dev pkg-config zlib1g-dev llvm clang cmake make libprotobuf-dev protobuf-compiler libclang-dev
 ```
 
 On Fedora:
 ```bash
-$ sudo dnf install openssl-devel systemd-devel pkg-config zlib-devel llvm clang cmake make protobuf-devel protobuf-compiler perl-core
+$ sudo dnf install openssl-devel systemd-devel pkg-config zlib-devel llvm clang cmake make protobuf-devel protobuf-compiler perl-core libclang-dev
 ```
 
 ## **2. Download the source code.**