Add page descriptions to docs (#2075)

Co-authored-by: mfwmyfacewhen <94880365+mfwmyfacewhen@users.noreply.github.com>
Signed-off-by: Jonah Aragon <github@aragon.science>
Signed-off-by: Daniel Gray <dngray@privacyguides.org>

docs/os/android-overview.md

@@ -1,6 +1,7 @@
 ---
 title: Android Overview
 icon: simple/android
+description: Android is an open-source operating system with strong security protections, which makes it our top choice for phones.
 ---
 Android is a secure operating system that has strong [app sandboxing](https://source.android.com/security/app-sandbox), [Verified Boot](https://source.android.com/security/verifiedboot) (AVB), and a robust [permission](https://developer.android.com/guide/topics/permissions/overview) control system.
 

docs/os/linux-overview.md

@@ -1,8 +1,9 @@
 ---
 title: Linux Overview
 icon: simple/linux
+description: Linux is an open-source, privacy-focused desktop operating system alternative, but not all distribitions are created equal.
 ---
-It is often believed that [open-source](https://en.wikipedia.org/wiki/Open-source_software) software is inherently secure because the source code is available. There is an expectation that community verification occurs regularly; however, this isn’t always [the case](https://seirdy.one/posts/2022/02/02/floss-security/). It does depend on a number of factors, such as project activity, developer experience, level of rigour applied to [code reviews](https://en.wikipedia.org/wiki/Code_review), and how often attention is given to specific parts of the [codebase](https://en.wikipedia.org/wiki/Codebase) that may go untouched for years.
+It is often believed that [open-source](https://en.wikipedia.org/wiki/Open-source_software) software is inherently secure because the source code is available. There is an expectation that community verification occurs regularly; however, this isn’t always [the case](https://seirdy.one/posts/2022/02/02/floss-security/). It does depend on a number of factors, such as project activity, developer experience, level of rigor applied to [code reviews](https://en.wikipedia.org/wiki/Code_review), and how often attention is given to specific parts of the [codebase](https://en.wikipedia.org/wiki/Codebase) that may go untouched for years.
 
 At the moment, desktop Linux does have some areas that could be better improved when compared to their proprietary counterparts, e.g.:
 

docs/os/qubes-overview.md

@@ -1,6 +1,7 @@
 ---
 title: "Qubes Overview"
 icon: simple/qubesos
+description: Qubes is an operating system built around isolating apps within virtual machines for heightened security.
 ---
 [**Qubes OS**](../desktop.md#qubes-os) is an operating system which uses the [Xen](https://en.wikipedia.org/wiki/Xen) hypervisor to provide strong security for desktop computing through isolated virtual machines. Each VM is called a *Qube* and you can assign each Qube a level of trust based on its purpose. As Qubes OS provides security by using isolation, and only permitting actions on a per case basis, it is the opposite of [badness enumeration](https://www.ranum.com/security/computer_security/editorials/dumb/).