Grammatical error in readme.md

## Title

Typo and grammatical error in “Login to your Directus instnace”

## Description

There is a grammatical mistake and a spelling error in the documentation

Current text
```powershell
Login to your Directus instnace
```

## Issues

Spelling mistake

```powershell
“instnace” is misspelled. Correct spelling: “instance”
```

## Location

readme.md

## Additional notes

Correcting this will improve clarity and professionalism in the documentation.

Open readme.md and find the phrase “Login to your Directus instnace” identified in the issue. Correct the spelling and grammatical error in that documentation text, then verify the README shows the revised wording.

Written by the indexing model from the issue text.