fix: add more clear instructions to the armada demo page (#2749)

* fix demo instructions

* fix create queue instruction

* Update demo.md

* Update demo.md

* Update demo.md

---------

Co-authored-by: Kevin Hannon <kannon1992@gmail.com>

docs/demo.md

@@ -25,6 +25,7 @@ cd armada
 All commands are intended to be run from the root of the repository.
 
 ## Setup an easy-to-use alias
+If you are on a Windows System, use a linux-supported terminal to run this command, for example [Git Bash](https://git-scm.com/downloads) or [Hyper](https://hyper.is/)
 ```bash
 alias armadactl='go run cmd/armadactl/main.go --armadaUrl armada.demo.armadaproject.io:443'
 ```
@@ -33,9 +34,10 @@ alias armadactl='go run cmd/armadactl/main.go --armadaUrl armada.demo.armadaproj
 Create queues, submit some jobs, and monitor progress:
 
 ### Queue Creation
+Use a unique name for the queue. Make sure you remember it for the next steps.
 ```bash
-armadactl create queue queue-a --priorityFactor 1
-armadactl create queue queue-b --priorityFactor 2
+armadactl create queue $QUEUE_NAME --priorityFactor 1
+armadactl create queue $QUEUE_NAME --priorityFactor 2
 ```
 
 For queues created in this way, user and group owners of the queue have permissions to:
@@ -51,30 +53,62 @@ armadactl create -f ./docs/quickstart/queue-a.yaml
 armadactl create -f ./docs/quickstart/queue-b.yaml
 ```
 
+Make sure to manually edit both of these `yaml` files using a code or text editor before running the commands above.
+
+```
+name: $QUEUE_NAME
+```
+
 ### Job Submission
 ```
 armadactl submit ./docs/quickstart/job-queue-a.yaml
 armadactl submit ./docs/quickstart/job-queue-b.yaml
 ```
 
+Make sure to manually edit both of these `yaml` files using a code or text editor before running the commands above.
+```
+queue: $QUEUE_NAME
+```
+
 ### Monitor Job Progress
 
 ```bash
-armadactl watch queue-a job-set-1
+armadactl watch $QUEUE_NAME job-set-1
 ```
 ```bash
-armadactl watch queue-b job-set-1
+armadactl watch $QUEUE_NAME job-set-1
 ```
 
 Try submitting lots of jobs and see queues get built and processed:
 
-```bash
+#### Windows (using Git Bash):
+
+Use a text editor of your choice.
+Copy and paste the following lines into the text editor:
+```
+#!/bin/bash
+
 for i in {1..50}
 do
   armadactl submit ./docs/quickstart/job-queue-a.yaml
   armadactl submit ./docs/quickstart/job-queue-b.yaml
 done
 ```
+Save the file with a ".sh" extension (e.g., myscript.sh) in the root directory of the project.
+Open Git Bash, navigate to the project's directory using the 'cd' command, and then run the script by typing ./myscript.sh and pressing Enter.
+
+#### Linux:
+
+Open a text editor (e.g., Nano or Vim) in the terminal and create a new file by running: nano myscript.sh (replace "nano" with your preferred text editor if needed).
+Copy and paste the script content from above into the text editor.
+Save the file and exit the text editor.
+Make the script file executable by running: chmod +x myscript.sh.
+Run the script by typing ./myscript.sh in the terminal and pressing Enter.
+
+#### macOS:
+
+Follow the same steps as for Linux, as macOS uses the Bash shell by default.
+With this approach, you create a shell script file that contains your multi-line script, and you can run it as a whole by executing the script file in the terminal.
 
 ## Observing job progress