Normal way to install that addon (to the appropriate directory) is to install the package geany-plugins (for all plugins) or geany-plugins-addons (for just that one) from your package manager (maybe Puppy has it pre-installed - I haven't checked).
Normal way to install that addon (to the appropriate directory) is to install the package geany-plugins (for all plugins) or geany-plugins-addons (for just that one) from your package manager (maybe Puppy has it pre-installed - I haven't checked).