made some fixes in the docs and to the relative links with posts and news pages

sitemap.xml

@@ -8,7 +8,7 @@ search: exclude
   {% for post in site.posts %}
   {% unless post.search == "exclude" %}
   <url>
-    <loc>{{site.url}}{{site.baseurl}}{{ post.url | remove: 'index.html' }}</loc>
+    <loc>{{site.url}}{{post.url}}</loc>
   </url>
   {% endunless %}
   {% endfor %}
@@ -17,7 +17,7 @@ search: exclude
   {% for page in site.pages %}
   {% unless page.search == "exclude" %}
   <url>
-    <loc>{{site.url}}{{site.baseurl}}{{ page.url | remove: 'index.html' }}</loc>
+    <loc>{{site.url}}{{ page.url}}</loc>
   </url>
   {% endunless %}
   {% endfor %}