fix: upgrade plan modal text

frontend/src/pages/cert-manager/PkiTemplateListPage/PkiTemplateListPage.tsx

@@ -297,7 +297,7 @@ export const PkiTemplateListPage = () => {
       <UpgradePlanModal
         isOpen={popUp.estUpgradePlan.isOpen}
         onOpenChange={(isOpen) => handlePopUpToggle("estUpgradePlan", isOpen)}
-        text="You can only configure template enrollment methods if you switch to Infisical's Enterprise plan."
+        text="Your current plan does not allow configuring template enrollment methods. To unlock this feature, please upgrade to Infisical Enterprise plan."
         isEnterpriseFeature={popUp.estUpgradePlan.data?.isEnterpriseFeature}
       />
     </>