feat: update create SLA modal design (#9182)

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Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>
Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/javascript/dashboard/i18n/locale/en/sla.json

@@ -65,7 +65,7 @@
     },
     "ADD": {
       "TITLE": "Add SLA",
-      "DESC": "SLAs: Friendly promises for great service!",
+      "DESC": "Friendly promises for great service!",
       "API": {
         "SUCCESS_MESSAGE": "SLA added successfully",
         "ERROR_MESSAGE": "There was an error, please try again"