[jsscripting] Update docs and refactor path (#11827)

This adds a minor refactoring of loading local resource paths that i didn't have time to get into 3.2  and moves the docs directory to doc.

Signed-off-by: Dan Cunningham <dan@digitaldan.com>

bundles/org.openhab.automation.jsscripting/src/main/java/org/openhab/automation/jsscripting/internal/OpenhabGraalJSScriptEngine.java

@@ -223,11 +223,12 @@ public class OpenhabGraalJSScriptEngine extends InvocationInterceptingScriptEngi
 
     /**
      * Converts a root node path to a class resource path for loading local modules
+     * Ex: C:\node_modules\foo.js -> /node_modules/foo.js
      *
      * @param path
      * @return
      */
     private String nodeFileToResource(Path path) {
-        return "/" + NODE_DIR + "/" + path.getFileName();
+        return "/" + path.subpath(0, path.getNameCount()).toString().replace('\\', '/');
     }
 }