update documentation in macros file

macros.nodejs

@@ -13,7 +13,8 @@
 
 # symlink dependencies so `npm link` works
 # this should be run in every module's %%install section
-# pass the module name if the npm metadata is incorrect (e.g. multiple versions)
+# pass --check to work in the current directory instead of the buildroot
+# pass --no-devdeps to ignore devDependencies when --check is used
 %nodejs_symlink_deps %{_rpmconfigdir}/nodejs-symlink-deps %{nodejs_sitelib}
 
 # patch package.json to fix a dependency