updated edge functions documentation (#99)

Author: c-arriagada

sqlite-cloud/platform/edge-functions.mdx

@@ -16,8 +16,8 @@ Turning on linearizable reads ensures strong consistency, but may introduce some
 
 ## Getting Started
 1. Navigate to the Edge Functions page from your dashboard.
-1. Under "Development", select "Edge Function", then click the "Create" button.
-1. Write and test your function.
+2. Under "Development", select "Edge Function", then click the "Create" button.
+3. Write and test your function.
     1. Select the database you want to access and an API key if necessary
     2. When you're finished, click deploy.
 
@@ -31,6 +31,24 @@ return {
 }
 ```
 
+### Authorization
+Edge functions that access your SQLite databases must be authorized via API key. You can automatically authorize an edge function on every call by assigning it an API key via the "API KEY" dropdown. 
+
+If no API key is assigned, an API key must be sent in the request url as a query parameter (`?apikey=YOUR_API_KEY`) or as an attribute in the request body (`{ apikey: YOUR_API_KEY }`).
+
+### Execution
+
+Edge functions can be called via HTTP GET and POST methods. You can pass additional values to your edge function in two ways:
+- Query parameters: Accessible via `request.params`
+- Request body: Accessible via `request.data`
+
+### Testing
+You may test the execution of edge functions by clicking the "Test" command. 
+
+You are not required to supply an API key when testing your edge function in the console. The function will run using the dashboard user privileges. 
+
+
+
 ## Guides
 ### Interacting with your Database
 Use the global `connection` object to access and manipulate your database.