Fix mismatch step number
The addition of submodule update command has moved correlating step down by one.
@@ -35,7 +35,7 @@ Note:
* On Linux and macOS: add `${HOME}/.cargo/bin` into your `PATH`.
* Make sure the C compiler toolchain is installed and, on Unix (e.g. macOS),
the compiler and linker executable `cc` is found in `PATH`.
-* On Linux with systemd: to enable logging to journald replace step 8
+* On Linux with systemd: to enable logging to journald replace step 9
with `cargo install --path jormungandr --features systemd`.
* The build requires the [Protocol Buffers][protobuf] compiler:
- On Linux environments without glibc such as Alpine, the protobuf compiler
