Update PulseConnectSecureVPN-PasswordSpray.yaml

Renaming the detection query for better quality to indicate that the detection is based of PulseConnectSecure  logs.

Detections/PulseConnectSecure/PulseConnectSecureVPN-PasswordSpray.yaml

@@ -1,5 +1,5 @@
 id: 1fa1528e-f746-4794-8a41-14827f4cb798
-name: Potential Password Spray Attempts
+name: PulseConnectSecure - Potential Password Spray Attempts
 description: |
   'This query identifies evidence of potential password spray activity against the Pulse Secure VPN server, 
    by looking for failures from multiple accounts, originating from the same host within a time window'