Added a server example link to "How to create a Django form (using HT…

…MX) in 90 seconds 🐎" (bigskysoftware#1938)

* Added a Django + HTMX forms link 

- Added a Django server example link to "How to create a Django form (using HTMX) in 90 seconds 🐎".
- This article has received over 10k views and positive comments so far. I wrote the article; I would have benefitted from seeing it when I was first learning to use HTMX.

* Update server-examples.md

Appended to the list as requested

www/content/server-examples.md

@@ -37,6 +37,7 @@ These examples may make it a bit easier to get started using htmx with your plat
 - <https://github.com/spookylukey/django-htmx-patterns/>
 - <https://github.com/idlesign/django-siteajax>
 - <https://github.com/guettli/django-htmx-fun/>
+- <https://www.photondesigner.com/articles/submit-async-django-form-with-htmx>
 
 ### FastAPI
 
@@ -157,4 +158,4 @@ These examples may make it a bit easier to get started using htmx with your plat
 
 ### DelphiMVCFramework
 - <https://github.com/danieleteti/delphi-dmvcframework-htmx-todo>
-- <https://github.com/danieleteti/delphimvcframework/tree/master/samples/htmx>
+- <https://github.com/danieleteti/delphimvcframework/tree/master/samples/htmx>