Tweak example input

Author: jbrudvik

DEVELOPING.md

@@ -17,7 +17,7 @@ $ go test  # All tests must pass
 `note` uses AppleScript to drive Notes.app. The underlying AppleScript script can be tested like this:
 
 ```sh
-$ osascript append_to_latest_unshared_note.txt "text to append"
+$ osascript append_to_latest_unshared_note.txt "Text to append"
 ```
 
 Please note that the formatting of the text (as HTML) is set in the containing Go code.

main.go

@@ -18,7 +18,7 @@ func main() {
 	app := &cli.App{
 		Name:            "note",
 		Usage:           "Append to latest Apple Notes note",
-		ArgsUsage:       "<text to append>",
+		ArgsUsage:       "\"Text to append\"",
 		Description:     "Ignores shared notes. Formats as new line by default.",
 		HideHelpCommand: true,
 		Version:         "v0.0.6",