scrippt https://apt.llvm.org/llvm.sh and llvm 10

hello

page https://apt.llvm.org/ give a link to

[https://apt.llvm.org/llvm.sh](https://apt.llvm.org/llvm.sh)

to easy install clang 10 on ubuntu and debian

but currently the script install version 9.

repo for version 10 seem fine, I just wrote this to don't forget it:

Hello,