Fix link to latest release (#3216)

README.md

@@ -26,7 +26,7 @@ There are multiple ways to install AdminLTE.
 
 ### Download & Changelog:
 
-Download from GitHub latest release [AdminLTE 3](https://github.com/ColorlibHQ/AdminLTE/latest).
+Download from GitHub latest release [AdminLTE 3](https://github.com/ColorlibHQ/AdminLTE/releases/latest).
 Visit the [releases](https://github.com/ColorlibHQ/AdminLTE/releases) page to view the changelog.
 Legacy Releases are [AdminLTE 2](https://github.com/ColorlibHQ/AdminLTE/releases/tag/v2.4.18) / [AdminLTE 1](https://github.com/ColorlibHQ/AdminLTE/releases/tag/1.3.1).