[documentation] Fixing the xclippy command
[documentation] Fixing the xclippy command

The cargo specific argument "--all-features" (which is not supported
by xclippy) was provided instead of "--all-targets".

This should be the only occurence.

libra/libra,libra/libra,aptos-labs/aptos-core,libra/libra,libra/libra,libra/libra,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core