Add missing new line

[autoantwort]

Fixes #38883
Before:

➜  vcpkg git:(test-features) ✗ ./vcpkg x-package-info libtorch
This command requires --x-jsonnote: updating vcpkg by rerunning bootstrap-vcpkg may resolve this failure.

After:

➜  vcpkg git:(test-features) ✗ vcpkg x-package-info libtorch                                   
This command requires --x-json
note: updating vcpkg by rerunning bootstrap-vcpkg may resolve this failure.

[BillyONeal]

Thanks :)