Some trivial fixes to Edge Function guides (#46092)

Was going through user feedback and fixed some of the minor issues with
the guides.

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## Summary by CodeRabbit

* **Documentation**
* Added guidance on handling CORS when invoking Edge Functions from the
browser (quickstart and dashboard)
* Updated Deno configuration guidance to reference a top-level deno.json
and adjusted recommended project structure
* Improved internal cross-references for templates and shared
documentation links in functions guides

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---------

Co-authored-by: Jeremias Menichelli <jmenichelli@gmail.com>

apps/docs/content/guides/functions/cors.mdx

@@ -52,7 +52,7 @@ This approach ensures that when new headers are added to the Supabase SDK, your
 
 #### For versions before 2.95.0
 
-If you're using `@supabase/supabase-js` before v2.95.0, you'll need to hardcode the CORS headers. Add a `cors.ts` file within a [`_shared` folder](/docs/guides/functions/quickstart#organizing-your-edge-functions):
+If you're using `@supabase/supabase-js` before v2.95.0, you'll need to hardcode the CORS headers. Add a `cors.ts` file within a [`_shared` folder](/docs/guides/functions/development-environment#recommended-project-structure):
 
 ```ts _shared/cors.ts
 export const corsHeaders = {

apps/docs/content/guides/functions/development-environment.mdx

@@ -42,7 +42,7 @@ Set up your editor environment for proper TypeScript support, autocompletion, an
    ```json
    {
      "deno.enablePaths": ["./supabase/functions"],
-     "deno.importMap": "./supabase/functions/import_map.json"
+     "deno.importMap": "./supabase/functions/deno.json"
    }
    ```
 
@@ -76,7 +76,7 @@ It's recommended to organize your functions according to the following structure
 ```bash
 └── supabase
     ├── functions
-    │   ├── import_map.json     # Top-level import map
+    │   ├── deno.json           # Top-level Deno configuration
     │   ├── _shared             # Shared code (underscore prefix)
     │   │   ├── supabaseAdmin.ts # Supabase client with SECRET key
     │   │   ├── supabaseClient.ts # Supabase client with PUBLISHABLE key

apps/docs/content/guides/functions/examples/auth-send-email-hook-react-email-resend.mdx

@@ -116,7 +116,7 @@ Deno.serve(async (req) => {
 
 ### 3. Create React Email templates
 
-Create a new folder `_templates` and create a new file `magic-link.tsx` with the following code:
+Create a new `_templates` folder following the [recommended project structure](/docs/guides/functions/development-environment#recommended-project-structure) and add a new `magic-link.tsx` file with the following code:
 
 ```tsx supabase/functions/send-email/_templates/magic-link.tsx
 import {

apps/docs/content/guides/functions/quickstart-dashboard.mdx

@@ -151,6 +151,12 @@ There is currently **no version control** for edits! The Dashboard's Edge Functi
 
 Now that your function is deployed, you can invoke it from within your app:
 
+<Admonition type="note" label="Calling an Edge Function from the browser?">
+
+Make sure your function can handle [CORS](/docs/guides/functions/cors) (Cross-Origin Resource Sharing) requests by configuring its headers correctly.
+
+</Admonition>
+
 <Tabs
   scrollable
   size="small"

apps/docs/content/guides/functions/quickstart.mdx

@@ -215,6 +215,12 @@ curl --request POST 'https://[YOUR_PROJECT_ID].supabase.co/functions/v1/hello-wo
 
 Now that your function is deployed, you can invoke it from within an app:
 
+<Admonition type="note" label="Calling from the browser?">
+
+Make sure your function can handle [CORS](/docs/guides/functions/cors) (Cross-Origin Resource Sharing) requests by configuring its headers correctly.
+
+</Admonition>
+
 <Tabs
   scrollable
   size="small"