Change param validation to verbose output

SteamPS/Public/Server/Update-SteamApp.ps1

@@ -34,7 +34,7 @@
     .EXAMPLE
     Update-SteamApp -ApplicationName 'Arma 3' -Credential 'Toby' -Path 'C:\DedicatedServers\Arma3'
 
-    Because there are multiple hits when searching for Arma 3, the user will be promoted to select the right application.
+    Because there are multiple hits when searching for Arma 3, the user will be promted to select the right application.
 
     .EXAMPLE
     Update-SteamApp -AppID 376030 -Path 'C:\DedicatedServers\ARK-SurvivalEvolved'
@@ -70,7 +70,7 @@
         )]
         [ValidateScript({
             if ($null -eq (Get-SteamApp -ApplicationID $_)) {
-                throw "ApplicationID $_ couldn't be found."
+                    Write-Verbose -Message "ApplicationID $_ couldn't be found using the Steam Web API. Continuing anyway as the application might exist."
             }
             $true
         })]