updated README.md; specify need for admin rights
@@ -33,7 +33,7 @@ This will install Rustlings and give you access to the `rustlings` command. Run
## Windows
-In PowerShell, set `ExecutionPolicy` to `RemoteSigned`:
+In PowerShell (Run as Administrator), set `ExecutionPolicy` to `RemoteSigned`:
```ps
Set-ExecutionPolicy RemoteSigned
