updated README.md; specify need for admin rights

stoiandan · stoiandan · commit c6b7ad8878d7 · 2021-04-24T18:32:13.000+03:00
diff --git a/README.md b/README.md
@@ -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
