fix: remove the TypeScript course (#1552)

The TypeScript course is an offtopic in the context of the Academy. It
is not a web scraping course, and it is not related to the Apify
platform per se. I see no reason why Apify should be teaching
TypeScript. And I think the team has already enough other, more relevant
docs to maintain.

When I joined, I wrote down an internal document called **Apify Academy
white paper**, where I suggested deleting this content. I think it's
more or less 1 year since I joined Apify, and I decided: Today is the
day! Today I'm bold enough to actually propose the change in a PR. If
this gets merged, I'll consider it as a gift to my work anniversary 😆

In the document, @mnmkng wrote the following:

> I think it was created mostly to help users make the switch to
TypeScript with Crawlee when we released full TS support. I don't even
remember what's in there frankly and I'm pretty sure we can live without
it.

![Miley
Cyrus](https://github.com/user-attachments/assets/d9179ec4-219f-4d0a-8e86-2a019bdfc7de)

Author: honzajavorek

nginx.conf

@@ -308,6 +308,8 @@ server {
   # Removed pages
   # GPT plugins were discontinued April 9th, 2024 - https://help.openai.com/en/articles/8988022-winding-down-the-chatgpt-plugins-beta
   rewrite ^/platform/integrations/chatgpt-plugin$            https://blog.apify.com/add-custom-actions-to-your-gpts/ redirect;
+  # TypeScript course was removed from the Academy - https://github.com/apify/apify-docs/pull/1552
+  rewrite ^/academy/switching-to-typescript(/.*)?$           https://apify.com/templates/categories/typescript permanent;
 
   # Python docs