Dear Maintainer,

I'd like to submit a patch to fix the Debci failures reported as below.
https://ci.debian.net/packages/r/rust-xshell-macros/unstable/amd64/

The failure is caused by passing incorrect parameter in debian/tests/control

With the patch attached, the autopkgtest tests are successfully:
autopkgtest [09:16:40]: test librust-xshell-macros-dev:: -----------------------]
autopkgtest [09:16:40]: test librust-xshell-macros-dev::  - - - - - - - - - - results - - - - - - - - - -
librust-xshell-macros-dev: PASS
autopkgtest [09:16:40]: @@@@@@@@@@@@@@@@@@@@ summary
rust-xshell-macros:@ PASS
librust-xshell-macros-dev:default PASS
librust-xshell-macros-dev: PASS
autopkgtest [09:16:40]: Binaries: resetting testbed apt configuration

Would you please accept this patch?

Best Regards,
Peng