Documentation: move Appendices to Development, fixed links

Both sections "User Partition" and "UUID Reference" are more
development topics, so by Alyssa's advice they should go
directly under the Development chapter. The section Appendices
was removed.

In addition, I replaced broken links.

Signed-off-by: Jenni Nikolaenko <evgeniia.nikolaenko@unikie.com>
Message-Id: <20221121131817.15162-1-evgeniia.nikolaenko@unikie.com>
Reviewed-by: Alyssa Ross <alyssa.ross@unikie.com>
Tested-by: Alyssa Ross <alyssa.ross@unikie.com>
Signed-off-by: Alyssa Ross <alyssa.ross@unikie.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/Documentation/development/user-partition.adoc b/Documentation/development/user-partition.adoc
new file mode 100644
index 0000000..d8fd956
--- /dev/null
+++ b/Documentation/development/user-partition.adoc
@@ -0,0 +1,17 @@
+= User Partition
+:page-parent: Development
+:page-nav_order: 5
+
+// SPDX-FileCopyrightText: 2022 Alyssa Ross <hi@alyssa.is>
+// SPDX-License-Identifier: GFDL-1.3-no-invariants-or-later OR CC-BY-SA-4.0
+
+The Spectrum host system is immutable, so configuration and user data
+lives on a separate partition.
+
+The host system discovers the user
+partition by looking for the special partition type
+`9293e1ff-cee4-4658-88be-898ec863944f`.
+
+This behavior can be overridden with the `ext` parameter on the host's kernel
+command line, which works in a similar way to the standard Linux `root`
+parameter.