cmake cmark examples

ElyPrismLauncher/ElyPrismLauncher CMakeLists.txt :364 

find_package(cmark QUIET)

PrismLauncher/PrismLauncher CMakeLists.txt :361 

find_package(cmark QUIET)

fn2006/PollyMC CMakeLists.txt :337 

find_package(cmark QUIET)

unmojang/FjordLauncher CMakeLists.txt :353 

find_package(cmark QUIET)

FreesmTeam/FreesmLauncher CMakeLists.txt :377 

find_package(cmark QUIET)