chore: updated some help text

Author: markemer

Sources/cap2spm.swift

@@ -5,7 +5,7 @@ import ArgumentParser
 
 @main
 struct Cap2SPM: ParsableCommand {
-    @Flag(name: .customLong("backup"), inversion: .prefixedNo, help: "Should we make a backup? Defaults to true")
+    @Flag(name: .customLong("backup"), inversion: .prefixedNo, help: "Should we make a backup?")
     var shouldBackup = true
 
     @Option(help: "Objective-C header for file containing CAP_PLUGIN macro")