Update Other OS steps based on feedback (#1154)

Co-authored-by: Aaron Honeycutt <[email protected]>
Co-authored-by: thomas-zimmerman <[email protected]>

Author: 3 people

content/system-firmware.md

@@ -136,7 +136,8 @@ Identify the EFI partition in the list. (The EFI partition is usually the first
 #### For NVMe Drives
 
 ```bash
-sudo apt install system76-driver
+sudo apt update
+sudo apt install system76-driver system76-firmware
 sudo mkdir -p /boot/efi
 sudo mount /dev/nvme0n1p1 /boot/efi
 gnome-control-center firmware
@@ -147,7 +148,8 @@ Where `/dev/nvme0n1p1` is the EFI system partition.
 #### For SATA Drives
 
 ```bash
-sudo apt install system76-driver
+sudo apt update
+sudo apt install system76-driver system76-firmware
 sudo mkdir -p /boot/efi
 sudo mount /dev/sda1 /boot/efi
 gnome-control-center firmware