Fix message text for Remove service principal alert

Corrected the IntroText to say "has been removed" instead of "has been added" for the Remove service principal operation to match the actual action being performed.

Co-authored-by: Zacgoose <107489668+Zacgoose@users.noreply.github.com>

Author: Copilot

Modules/CIPPCore/Public/New-CIPPAlertTemplate.ps1

@@ -240,7 +240,7 @@ function New-CIPPAlertTemplate {
                     $LocationTable = ($LocationInfo | ConvertTo-Html -Fragment -As List | Out-String).Replace('<table>', ' <table class="table-modern">')
                     $IntroText = $IntroText + "<p>The (potential) location information for this IP is as follows:</p>$LocationTable"
                 }
-                $IntroText = "$($data.ObjectId) has been added by $($data.UserId)."
+                $IntroText = "$($data.ObjectId) has been removed by $($data.UserId)."
                 $ButtonUrl = "$CIPPURL/tenant/administration/applications/enterprise-apps?tenantFilter=$Tenant"
                 $ButtonText = 'Enterprise Apps'
             }