Rules tweaks (#2336)

* Update JRuby notification action

Signed-off-by: Jimmy Tanagra <jcode@tanagra.id.au>

* split helper library code into separate blocks for clarity

Signed-off-by: Jimmy Tanagra <jcode@tanagra.id.au>

---------

Signed-off-by: Jimmy Tanagra <jcode@tanagra.id.au>

concepts/rules.md

@@ -625,7 +625,7 @@ rule "Window open reminder" do
   changed gWindows.members, to: OPEN, for: 1.hour
   run do |event|
     # Item guaranteed to be OPEN here, no need to check
-    notify("#{event.item.label} is open for an hour!")
+    Notification.send("#{event.item.label} is open for an hour!")
   end
 end
 ```

configuration/jsr223.md

@@ -89,7 +89,9 @@ sRule.setTriggers([
 ]);
 
 automationManager.addRule(sRule);
+```
 
+```js
 // And the same rule using the helper library:
 
 const { rules, triggers } = require('openhab');
@@ -185,7 +187,9 @@ s_rule.set_triggers([
     ])
 
 $automationManager.add_rule(s_rule)
+```
 
+```ruby
 # And the same rule using the bundled helper library:
 
 rule "A Cron Rule in Ruby" do
@@ -234,12 +238,18 @@ To facilitate JSR223 scripting, several openHAB-related variables are automatica
 They can be loaded into the script context using `scriptExtension.importPreset(String preset)`, e.g. `scriptExtension.importPreset("RuleSimple")`.
 The `default` preset is preloaded, so it does not require importing.
 
-- [`Default`](#default-preset-importpreset-not-required)
-- [`RuleSimple`](#rulesimple-preset)
-- [`RuleSupport`](#rulesupport-preset)
-- [`RuleFactories`](#rulefactories-preset)
-- [`ScriptAction`](#scriptaction-preset)
-- [`cache`](#cache-preset)
+- [Overview](#overview)
+  - [Example rules for a first impression](#example-rules-for-a-first-impression)
+  - [Script Locations](#script-locations)
+  - [`ScriptExtension` Objects (all JSR223 languages)](#scriptextension-objects-all-jsr223-languages)
+    - [Default Preset (`importPreset` not required)](#default-preset-importpreset-not-required)
+      - [`events` operations](#events-operations)
+    - [RuleSimple Preset](#rulesimple-preset)
+    - [`RuleSupport` Preset](#rulesupport-preset)
+    - [`RuleFactories` Preset](#rulefactories-preset)
+    - [`ScriptAction` Preset](#scriptaction-preset)
+    - [`cache` Preset](#cache-preset)
+  - [`TriggerType` Objects (all JSR223 languages)](#triggertype-objects-all-jsr223-languages)
 
 #### Default Preset (`importPreset` not required)