Solo Super

update readme with easy qt5 installation procedure. Remove dollars from code sections (for consistency and useability).

### Describe the bug ### Environment details * OS: Ubuntu 22.04 * Compiler: not relevant(?) * Conan runner config: ```yaml image: myimage run: name: container_name containerEnv: CONAN_LOGIN_USERNAME_ARTIFACTORY: username CONAN_PASSWORD_ARTIFACTORY: password...