[Update] How to Install, Configure and Run the Fish Shell (#7336)

* Update index.md

-deprecated and removed the link to:https://github.com/onodera-punpun/neet

* Copy edits

---------

Co-authored-by: Nathan Melehan <[email protected]>

Author: Rajakavitha1

docs/guides/quick-answers/linux/how-to-install-configure-and-run-fish/index.md

@@ -14,6 +14,8 @@ external_resources:
 - '[Fish Cookbook](https://github.com/jbucaran/fish-shell-cookbook#how-to-find-my-current-location-in-fish)'
 tags: ["linux"]
 aliases: ['/quick-answers/linux/how-to-install-configure-and-run-fish/']
+deprecated: true
+
 ---
 
 ![How to Install, Configure, and Run the Fish Shell](fish_banner.jpg)
@@ -38,7 +40,7 @@ The configuration file for Fish is located at: `~/.config/fish/config.fish`. You
 
 ![Customized Fish Shell Configuration File](fish_config.png)
 
-## Regarding Fish
+## Use Fish
 
 Fish is similar to other shells: you type commands followed by arguments.
 
@@ -57,13 +59,8 @@ However, in Fish, you chain commands with `;`, instead of `&&`:
 
 If you can't function without `!!` and `&&`, check [this](https://github.com/fish-shell/fish-shell/wiki/Bash-Refugees) repo out for a solution.
 
-
-## Use Fish
-
-Fish boasts a full-featured scripting language. You can use scripts written in Fish to do anything you would do with a scripting language, and even some cooler [things](https://github.com/onodera-punpun/neet), like managing your anime/drama series.
-
-
 ### Functions
+
 Fish does not support aliasing. Instead Fish uses `functions`. Typing `functions` into Fish will output a list of functions that exist by default: