fix typo in theme, add nav bar structure

DESCRIPTION

@@ -26,7 +26,7 @@ Description: Provides functions for nowcasting right-truncated epidemiological
   data, based heavily on the method implemented in
   https://github.com/KITmetricslab/RESPINOW-Hub/tree/main/code/baseline
 License: MIT + file LICENSE
-URL: https://github.com/epinowcast/baselinenowcast/
+URL:https:://baselinenowcast.epinowcast.org, https://github.com/epinowcast/baselinenowcast/
 BugReports: https://github.com/epinowcast/baselinenowcast/issues
 Depends:
     R (>= 4.0.0)
@@ -44,6 +44,8 @@ Suggests:
     withr,
     knitr
 Encoding: UTF-8
+Language: en-GB
+LazyData: true
 Roxygen: list(markdown = TRUE)
 RoxygenNote: 7.3.2
 VignetteBuilder: knitr

_pkgdown.yml

@@ -1,6 +1,6 @@
 url: https://baselinenowcast.epinowcast.org/
 template:
-  pacakge: enwtheme
+  package: enwtheme
   math-rendering: mathjax
 
 
@@ -9,8 +9,14 @@ development:
 
 navbar:
   structure:
+    left: [intro, metareference, news]
     right: [search, github, lightswitch]
   components:
+    metareference:
+      text: Reference
+      menu:
+      - text: R reference
+        href: reference/index.html
 
 home:
   title: Baseline nowcast for right-truncated epidemiological data