Update teams/teams-ps/teams/Get-CsTeamsCustomBannerText.md

Co-authored-by: JohanFreelancer9 <[email protected]>

Author: saleens7

teams/teams-ps/teams/Get-CsTeamsCustomBannerText.md

@@ -45,7 +45,7 @@ Gets the properties of the CustomText instance of TeamsCustomBannerText.
 ## PARAMETERS
 
 ### -Identity
-Policy instance name. Optional.
+Policy instance name (optional).
 
 ```yaml
 Type: String