docs: add user guide for file shredder (#2323)

* docs: add user guide for file shredder

* fix: improve metadata

* fix: revise author metadata in valuta

* fix: revise formatting

* feat: add screenshots for Installation section

Signed-off-by: Christine <[email protected]>

* feat: finishing guide

Signed-off-by: Christine <[email protected]>

* fix: trying to improve the hyperlinks in file shredder guide

Signed-off-by: Christine <[email protected]>

* fix: still trying to fix hyperlinks

Signed-off-by: Christine <[email protected]>

* fix: omit unwanted information

Signed-off-by: Christine <[email protected]>

* Update file-shredder.md

fix indentation

---------

Signed-off-by: Christine <[email protected]>
Co-authored-by: sspencerwire <[email protected]>

Author: CBID2

docs/desktop/file-shredder.md

@@ -0,0 +1,53 @@
+---
+title: File Shredder 
+author: Christine Belzie
+contributors:  
+---
+ 
+## Introduction
+
+Need to remove a postcard or a PDF file that contains information like your birthday? Check out File Shredder. It is an application that permanently removes sensitive information online.
+
+## Assumptions
+
+This guide assumes you have the following:
+
+- Rocky Linux
+- Flatpak
+- FlatHub
+
+## Installation Process
+
+![Screenshot of the File Shredder app page on FlatHub, showing the blue install button being highlighted by a red rectangle](images/01_file-shredder.png)
+
+1. Go to [Flathub's website](https://flathub.org), type "File Shredder" in the search bar, and click on **Install**
+
+    ![manual install script and run script](images/file-shredder_install.png)
+
+2. Copy the manual script in your terminal:
+
+    ```bash
+    flatpak install flathub io.github.ADBeveridge.Raider
+    ```
+
+3. Finally, run the manual script in your terminal:
+
+    ```bash
+    flatpak run flathub io.github.ADBeveridge.Raider
+    ```
+
+## How to Use
+
+To use File Shredder, do the following:
+
+1. Drag or click on **Add file** to pick the file(s) you want to remove
+
+   ![Screenshot of the File Shredder homepage, showing the add dropdown menu and drop here button being highlighted by red rectangles](images/02_file-shredder.png)
+
+2. Click on **Shred All**
+
+ ![Screenshot of a file named Social Security appearing on top. At the bottom, there is a red button with the phrase Shred All written in white font and surrounded by a red rectangle](images/03_file-shredder.png)
+
+## Conclusion
+
+Whether it’s a Social Security file or a banking statement, File Shredder is the tool that makes it easy to shred files without needing to buy a shredder. Eager to learn more about or have more ideas for this application? [Submit an issue in File Shredder's repository at GitHub](https://github.com/ADBeveridge/raider/issues).

docs/desktop/gnome/images/01_file-shredder.png

@@ -1,7 +1,7 @@
----
- title: Valuta
- author: Christine Belzie
- contributors: Steven Spencer
+---
+title: Valuta
+author: Christine Belzie
+contributors: Steven Spencer 
 ---
 
 ## Introduction