fix typo in 01-getting-started.md (#7349)

Author: Lx

reference/docs-conceptual/learn/ps101/01-getting-started.md

@@ -73,7 +73,7 @@ At line:1 char:29
 ```
 
 The solution to this problem is to run PowerShell as a domain user who is a local administrator.
-This is how my second domain user account is configured. Using the principal of least privilege,
+This is how my second domain user account is configured. Using the principle of least privilege,
 this account should NOT be a domain administrator, or have any elevated privileges in the domain.
 
 Close PowerShell. Relaunch the PowerShell console, except this time right-click on the **Windows