fix(upgrade): align notice with platform

src/upgrade/cli.go

@@ -20,7 +20,15 @@ var (
 	program   *tea.Program
 	textStyle = lipgloss.NewStyle().Margin(1, 0, 2, 0)
 	title     string
+)
 
+const (
+	upgradeNotice = `
+A new release of Oh My Posh is available: %s → %s
+To upgrade, run: 'oh-my-posh upgrade'
+
+To enable automated upgrades, set 'auto_upgrade' to 'true' in your configuration.
+`
 	Supported = true
 )
 

src/upgrade/cli_other.go

@@ -4,8 +4,16 @@ package upgrade
 
 import "github.com/jandedobbeleer/oh-my-posh/src/platform"
 
+const (
+	upgradeNotice = `
+A new release of Oh My Posh is available: %s → %s
+
+To upgrade, use your favorite package manager or, if you used Homebrew to install, run: 'brew update; brew upgrade oh-my-posh'
+`
+)
+
 func Run(_ platform.Environment) {}
 
-var (
+const (
 	Supported = false
 )

src/upgrade/notice.go

@@ -31,12 +31,6 @@ type release struct {
 
 const (
 	RELEASEURL = "https://api.github.com/repos/jandedobbeleer/oh-my-posh/releases/latest"
-	upgradeNotice = `
-A new release of Oh My Posh is available: %s → %s
-To upgrade, run: 'oh-my-posh upgrade'
-
-To enable automated upgrades, set 'auto_upgrade' to 'true' in your configuration.
-`
 	CACHEKEY   = "upgrade_check"
 )