feat: adjust javadoc shortcode for external pi4j repo

Author: ppmathis

config.toml

@@ -45,6 +45,7 @@ url = "https://www.fhnw.ch/en/"
 [params]
 repoURL = "https://github.com/Pi4J/pi4j-example-crowpi"
 codeURL = "https://github.com/Pi4J/pi4j-example-crowpi/blob/main/"
+docsURL = "https://pi4j.com/pi4j-example-crowpi/"
 editURL = "https://github.com/FHNW-IP5-IP6/CrowPiGoesJavaTutorial/edit/main/content/german/"
 author = "Pascal Mathis, Tobias Siegrist"
 description = "CrowPi goes Java: An easy introduction to electronics programming"

layouts/shortcodes/javadoc.html

@@ -2,7 +2,7 @@
 {{ $class := .Get "class" }}
 {{ $subclass := .Get "subclass" | default "" }}
 {{ $classURL := print (replace $class "." "/") (cond (not (eq $subclass "")) (print "." $subclass) "") ".html" }}
-{{ $docsURL := relURL (print "/apidocs/" $module "/" $classURL) }}
+{{ $docsURL := printf "%s/%s/%s" (strings.TrimSuffix "/" .Site.Params.docsURL) $module $classURL }}
 
 {{ (print "```" $class "```") | markdownify }}
 <a href="{{ $docsURL }}" target="_blank" class="btn btn-default btn-small">