Fix Grayscale Mode link not working. (#1132)

README.md

@@ -1006,7 +1006,7 @@ Any comments, suggestions? [Let us know!](https://github.com/jaywcjlove/awesome-
 * [CheatSheet](https://www.mediaatelier.com/CheatSheet/) -  Hold the ⌘-Key to get a list of all active shortcuts of the current application. It's as simple as that. ![Freeware][Freeware Icon]
 * [f.lux](https://justgetflux.com/) - Makes the color of your computer's display adapt to the time of day. ![Freeware][Freeware Icon]
 * [Lunar](https://lunar.fyi/) -  Help you adujst brightness, contrast and volumn of your external display. [![Open-Source Software][OSS Icon]](https://github.com/alin23/Lunar) ![Freeware][Freeware Icon]
-* [Grayscale Mode](https://grayscalemode.com/) - An open source macOS app that lets you quickly toggle grayscale filter right from your menu bar or using a keyboard shortcut (⌥⌘G). [![Open-Source Software][OSS Icon]](https://github.com/rkbhochalya/grayscale-mode) ![Freeware][Freeware Icon]
+* [Grayscale Mode](https://github.com/rkbhochalya/grayscale-mode) - An open source macOS app that lets you quickly toggle grayscale filter right from your menu bar or using a keyboard shortcut (⌥⌘G). [![Open-Source Software][OSS Icon]](https://github.com/rkbhochalya/grayscale-mode) ![Freeware][Freeware Icon]
 * [KeyCastr](https://github.com/keycastr/keycastr) - Open-source keystroke visualizer.  [![Open-Source Software][OSS Icon]](https://github.com/keycastr/keycastr) ![Freeware][Freeware Icon]
 * [NightOwl](https://nightowl.kramser.xyz/) - Automatically switch between macOS Mojave's light and dark themes by time of day or with a menu bar or keyboard shortcut. ![Freeware][Freeware Icon]
 * [One Switch](https://fireball.studio/oneswitch) - Mac menu bar app that adds various switches to the Mac's menu bar.