adding URLs for issue Add link to github from pkgdown site

Fixes #5

Author: CyGei

DESCRIPTION

@@ -15,4 +15,5 @@ Suggests:
     rmarkdown,
     treespace
 VignetteBuilder: knitr
-URL: https://cygei.github.io/mixtree/
+URL: https://github.com/CyGei/mixtree, https://cygei.github.io/mixtree/
+BugReports: https://github.com/CyGei/mixtree/issues

_pkgdown.yml

@@ -1,8 +1,12 @@
-url: https://cygei.github.io/epitree/
+url: https://cygei.github.io/mixtree/
 template:
   bootstrap: 5
   bslib:
     bootswatch: lux
     pkgdown-nav-height: 100px
-
+repo:
+  url:
+    home: https://github.com/CyGei/mixtree
+    issue: https://github.com/CyGei/mixtree/issues
+    user: https://github.com/CyGei