[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/README.md

@@ -30,7 +30,7 @@ to common openHAB functionality within rules including items, things, actions, l
 
 This add-on includes by default the [openhab-js](https://github.com/openhab/openhab-js/) NPM library and exports it's namespaces onto the global namespace. This allows the use of `items`, `actions`, `cache` and other objects without the need to explicitly import using `require()`.  This functionality can be disabled for users who prefer to manage their own imports via the add-on configuration options. 
 
-![OpenHAB Rule Configuration](./docs/settings.png)
+![openHAB Rule Configuration](./doc/settings.png)
 
 ## UI Based Rules
 
@@ -42,17 +42,17 @@ Advanced users, or users migrating scripts from existing systems may want to use
 
 Using the openHAB UI, first create a new rule and set a trigger condition
 
-![OpenHAB Rule Configuration](./docs/rule-config.png)
+![openHAB Rule Configuration](./doc/rule-config.png)
 
 ### Adding Actions
 
 Select "Add Action" and then select "ECMAScript 262 Edition 11".  Its important this is "Edition 11" or higher, earlier versions will not work. This will bring up a empty script editor where you can enter your javascript.
 
-![OpenHAB Rule Engines](./docs/rule-engines.png)
+![openHAB Rule Engines](./doc/rule-engines.png)
 
 You can now write rules using standard ES6 Javascript along with the included openHAB [standard library](#standard-library).
 
-![OpenHAB Rule Script](./docs/rule-script.png)
+![openHAB Rule Script](./doc/rule-script.png)
 
 For example, turning a light on:
 ```javascript

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('\\', '/');
     }
 }