Minor: Fix unwanted newline in message

CMakeLists.txt

@@ -72,8 +72,7 @@ if (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
     find_package(NL)
     set_package_properties(NL PROPERTIES
         TYPE REQUIRED
-        PURPOSE "Used for gathering socket info via the sock_diag netlink subsystem and for the network
-            plugin when NetworkManagerQt is not available."
+        PURPOSE "Used for gathering socket info via the sock_diag netlink subsystem and for the network plugin when NetworkManagerQt is not available."
     )
     find_package(libpcap)
     set_package_properties(