docs: Update VS Code's outdated Copilot instructions to match other editors (#49823)

DeltaCalcium and Kunall Banerjee created 1 month ago

Updated outdated instructions for configuring GitHub Copilot to match
those on other editor's migration guides

Before you mark this PR as ready for review, make sure that you have:
- [X] Added a solid test coverage and/or screenshots from doing manual
testing
- [X] Done a self-review taking into account security and performance
aspects
- [X] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)

Release Notes:

- N/A

Co-authored-by: Kunall Banerjee <hey@kimchiii.space>

Change summary

docs/src/migrate/vs-code.md | 16 +++++-----------
1 file changed, 5 insertions(+), 11 deletions(-)

Detailed changes

docs/src/migrate/vs-code.md 🔗

@@ -317,18 +317,12 @@ If you’re used to GitHub Copilot in VS Code, you can do the same in Zed. You c
 
 #### Configuring GitHub Copilot
 
-You should be able to sign-in to GitHub Copilot by clicking on the Zeta icon in the status bar and following the setup instructions.
-You can also add this to your settings:
+1. Open Settings with `Cmd+,` (macOS) or `Ctrl+,` (Linux/Windows)
+2. Navigate to **AI → Edit Predictions**
+3. Click **Configure** next to "Configure Providers"
+4. Under **GitHub Copilot**, click **Sign in to GitHub**
 
-```json
-{
-  "features": {
-    "edit_prediction_provider": "copilot"
-  }
-}
-```
-
-To invoke completions, just start typing. Zed will offer suggestions inline for you to accept.
+Once signed in, just start typing. Zed will offer suggestions inline for you to accept.
 
 #### Additional AI Options