test signature

README.md

@@ -56,7 +56,7 @@ If you have already cloned the repo and forgot to pass `--recurse-submodules`, e
 
 ### Install required Ubuntu packages
 
-```
+```bash
 sudo apt update
 sudo apt install autoconf build-essential cmake libproc2-dev libtool texinfo wget yasm flex bison btrfs-progs python3 python3-pip gawk git vim doxygen 
 sudo apt install make build-essential cmake pkg-config libgnutls28-dev libssl-dev unzip zlib1g-dev libgcrypt20-dev docker.io gcc-11 g++-11 gperf clang-format-14 gnutls-dev