Reorder wiki pages to match Helios4 set-up step orders

Add 'where to start' sub-section in intro page.

mkdocs.yml

@@ -58,25 +58,24 @@ markdown_extensions:
 # Page naming
 pages:
 - Introduction: 'index.md'
-- Hardware:
-  - Overview : 'hardware.md'
-  - GPIO : 'gpio.md'
-  - LED : 'led.md'
-  - I2C (OLED) : 'i2c.md'
-  - SPI (NOR Flash) : 'spi.md'
-  - PWM (Fan) : 'pwm.md'
-  - CESA (HW Crypto) : 'cesa.md'
 - Kit Assembly: 'kit.md'
 - Install: 'install.md'
+- Download: 'download.md'
 - Software:
-  - U-Boot : 'uboot.md'
   - Armbian : 'armbian.md'
+  - FreeBSD : 'freebsd.md'
   - Mdadm (RAID) : 'mdadm.md'
   - NextCloud : 'nextcloud.md'
   - OpenMediaVault : 'omv.md'
   - Syncloud : 'syncloud.md'
-  - FreeBSD : 'freebsd.md'
-- Download: 'download.md'
-- Development: 'dev.md'
+  - U-Boot : 'uboot.md'
+- Hardware:
+  - Overview : 'hardware.md'
+  - CESA (HW Crypto) : 'cesa.md'
+  - GPIO : 'gpio.md'
+  - I2C (OLED) : 'i2c.md'
+  - LED : 'led.md'
+  - PWM (Fan) : 'pwm.md'
+  - SPI (NOR Flash) : 'spi.md'
 - Documents: 'docs.md'
 - About: 'about.md'