refactor: remove date from alert messages

The commit refactors the code in `alert_discord.sh` and `alert_slack.sh` to remove the date from the alert messages sent by LinuxGSM. This change simplifies the message content while still indicating that it was sent by LinuxGSM and includes the version number.

lgsm/modules/alert_discord.sh

@@ -65,7 +65,7 @@ jsoninfo=$(
             ],
             "footer": {
 				"icon_url": "https://raw.githubusercontent.com/${githubuser}/${githubrepo}/${githubbranch}/lgsm/data/alert_discord_logo.jpg",
-                "text": "Sent by LinuxGSM ${version} - $(date)"
+                "text": "Sent by LinuxGSM ${version}"
             }
         }
     ]
@@ -126,7 +126,7 @@ jsonnoinfo=$(
             ],
             "footer": {
 				"icon_url": "https://raw.githubusercontent.com/${githubuser}/${githubrepo}/${githubbranch}/lgsm/data/alert_discord_logo.jpg",
-                "text": "Sent by LinuxGSM ${version} - $(date)"
+                "text": "Sent by LinuxGSM ${version}"
             }
         }
     ]

lgsm/modules/alert_slack.sh

@@ -17,7 +17,7 @@ jsonnoinfo=$(
 				{
 					"type": "header",
 					"text": {
-						"type": "plain_text",
+						"type": "mrkdwn",
 						"text": "${alerttitle}",
 						"emoji": true
 					}
@@ -75,7 +75,7 @@ jsonnoinfo=$(
 						},
 						{
 							"type": "plain_text",
-							"text": "Sent by LinuxGSM ${version} - $(date)",
+							"text": "Sent by LinuxGSM ${version}",
 							"emoji": true
 						}
 					]
@@ -97,7 +97,7 @@ jsoninfo=$(
 				{
 					"type": "header",
 					"text": {
-						"type": "plain_text",
+						"type": "mrkdwn",
 						"text": "${alerttitle}",
 						"emoji": true
 					}
@@ -162,7 +162,7 @@ jsoninfo=$(
 						},
 						{
 							"type": "plain_text",
-							"text": "Sent by LinuxGSM ${version} - $(date)",
+							"text": "Sent by LinuxGSM ${version}",
 							"emoji": true
 						}
 					]