add test redirect

Author: h0rhay

.env.development

@@ -0,0 +1 @@
+GATSBY_IS_STAGING=true

netlify.toml

@@ -5,4 +5,9 @@
 [[redirects]]
  from = "/en/latest/"
  to = "/introduction/"
+ status = 301
+
+[[redirects]]
+ from = "/install/install-node.html"
+ to = "/getting-started/installing-the-cardano-node/"
  status = 301