rewritten arm-installer shell commands with delimitter \ for readability

any long commands with flags are read better with delimitter. Checked on local build and preview.

modules/ROOT/pages/raspberry-pi.adoc

@@ -1,7 +1,7 @@
 = Fedora on Raspberry Pi
 Flo H;  jtagcat; The Fedora Docs Team
 :revnumber: F38
-:revdate: 2023-08-05
+:revdate: 2023-08-14
 :category: Installation
 :tags: How-to ARM-SBC Raspberry-Pi 
 
@@ -69,14 +69,18 @@ This procedure shows Fedora users how to add Fedora ARM to a microSD for use wit
 +
 [source,shell,subs="attributes"]
 ----
-$ dnf install -y arm-image-installer
+$ sudo dnf install -y arm-image-installer
 ----
 +
 . As the root user, write the Fedora ARM image to the microSD card:
 +
 [source,shell,subs="quotes,attributes"]
 ----
-# arm-image-installer --image=__</path/to/fedora_image>__ --target=__<RPi_Version>__ --media=/dev/__<sd_card_device>__ --resizefs
+$ sudo arm-image-installer \
+--image=__</path/to/fedora_image&#62 \
+--target=__<RPi_Version&#62 \
+--media=/dev/__<sd_card_device&#62 \
+--resizefs
 ----
 +
 Where:
@@ -87,6 +91,7 @@ Where:
 ** `rpi2` for a Raspberry Pi 2.
 ** `rpi3` for a Raspberry Pi 3.
 * `/dev/__<sd_card_device>__` is the microSD card 'device' on your system, such as `/dev/sdX` or `/dev/mmcblkX`. The `lsblk` command may help you identify your micro-SD card.
+* --resizefs: Resize the filesystem to occupy the entire SD card
 +
 [NOTE]
 ====