Update powershell/ql/src/experimental/UsernameOrPasswordParameter.qhelp

Co-authored-by: Mathias Vorreiter Pedersen <[email protected]>

Author: chanel-y

powershell/ql/src/experimental/UsernameOrPasswordParameter.qhelp

@@ -9,7 +9,7 @@
 </overview>
 <recommendation>
 
-<p>Change the parameter to type PSCredential.</p>
+<p>Change the parameter to type <code>PSCredential</code>.</p>
 
 </recommendation>
 <references>