[CI-SKIP] Update makemcdevsrc.sh (#1950)

[Aikar note] we really should figure out a way to skip CI again :(

scripts/makemcdevsrc.sh

@@ -14,7 +14,7 @@ papernms="Paper-Server/src/main/java/net/minecraft/server"
 mcdevsrc="${decompiledir}/src/net/minecraft/server"
 rm -rf "${mcdevsrc}"
 mkdir -p "${mcdevsrc}"
-cp ${nms}/*.java "${mcdevsrc}/"
+cp "${nms}"/*.java "${mcdevsrc}/"
 
 for file in "${nms}/"*
 do