Changed site url to 2martens.de

Signed-off-by: Jim Martens <github@2martens.de>

_config.yml

@@ -12,7 +12,7 @@ description: > # this means to ignore newlines until "baseurl:"
   On this site you can find my political views and other content
   related to me personally.
 baseurl: "" # the subpath of your site, e.g. /blog
-url: "https://martens7.uber.space" # the base hostname & protocol for your site
+url: "https://2martens.de" # the base hostname & protocol for your site
 defaults:
   -
     scope:
@@ -42,4 +42,4 @@ exclude:
   - Gemfile.lock
   - deploy_ed25519.enc
   - LICENSE
-  - vendor
+  - vendor