'emultation' to 'emulation' (#993)

## Changes

Fixes a typo on line 254, 'emultation', to 'emulation'

## Checks

By submitting your pull request for review, you agree to the following:

- [x] This contribution was created in whole or in part by me, and I
have the right to submit it under the terms of this repository's open
source licenses.
- [x] I understand and agree that this contribution and a record of it
are public, maintained indefinitely, and may be redistributed under the
terms of this repository's open source licenses.
- [x] To the best of my knowledge, all proposed changes are accurate.

Author: Fesiug

content/en-us/studio/ui-overview.md

@@ -251,6 +251,6 @@ Studio offers a suite of options for testing an experience before [releasing it
 - [Rapid paytesting](../studio/testing-modes.md#playtest-options) — Provides a close simulation of the experience running on the Roblox application.
 - [Multi-client simulation](../studio/testing-modes.md#multi-client-simulation) — Compares how each client "sees" other clients within the experience.
 - [Device emulation](../studio/testing-modes.md#device-emulation) — Provides insight on how controls operate on a mobile device or how on-screen UI displays on different screens and aspect ratios.
-- [Controller emultation](../studio/testing-modes.md#controller-emulation) — Accurately emulates [gamepad input](../input/gamepad.md) directly in Studio.
+- [Controller emulation](../studio/testing-modes.md#controller-emulation) — Accurately emulates [gamepad input](../input/gamepad.md) directly in Studio.
 
 See [Studio testing modes](../studio/testing-modes.md) for more information on each testing option.