Update _adr_help_new

Update URL to ADR blog

npryce#125

src/_adr_help_new

@@ -12,14 +12,14 @@ preferred; EDITOR is used if VISUAL is not set).  After editing, the
 file name of the ADR is output to stdout, so the command can be used in
 scripts.
 
-If the ADR directory contains a file `templates/template.md`, this is used as
+If the ADR directory contains a file $(templates/template.md), this is used as
 the template for the new ADR.  Otherwise the following file is used:
 
   ${adr_template_dir}/template.md
 
 This template follows the style described by Michael Nygard in this article.
 
-  http://blog.cognitect.com/2011/11/15/documenting-architecture-decisions.html
+  https://cognitect.com/blog/2011/11/15/documenting-architecture-decisions
 
 Options: