fix(readme): adjust URL of runat.json (#3484)

Author: jonz94

README.md

@@ -120,7 +120,7 @@ The apps that install best with Scoop are commonly called "portable" apps: i.e.
 
 Since installers are common, Scoop supports them too (and their uninstallers).
 
-Scoop is also great at handling single-file programs and Powershell scripts. These don't even need to be compressed. See the [runat](https://github.com/lukesampson/scoop/blob/master/bucket/runat.json) package for an example: it's really just a GitHub gist.
+Scoop is also great at handling single-file programs and Powershell scripts. These don't even need to be compressed. See the [runat](https://github.com/ScoopInstaller/Main/blob/master/bucket/runat.json) package for an example: it's really just a GitHub gist.
 
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