feat: plantuml in markdown preview

server/modules/rendering/markdown-plantuml/definition.yml

@@ -8,22 +8,25 @@ dependsOn: markdownCore
 props:
   server:
     type: String
-    default: https://www.plantuml.com/plantuml
+    default: https://plantuml.requarks.io
     title: PlantUML Server
     hint: PlantUML server used for image generation
     order: 1
+    public: true
   openMarker:
     type: String
     default: "```plantuml"
     title: Open Marker
     hint: String to use as opening delimiter
     order: 2
+    public: true
   closeMarker:
     type: String
     default: "```"
     title: Close Marker
     hint: String to use as closing delimiter
     order: 3
+    public: true
   imageFormat:
     type: String
     default: svg
@@ -35,3 +38,4 @@ props:
       - latex
       - ascii
     order: 4
+    public: true

server/modules/rendering/markdown-plantuml/renderer.js

@@ -7,12 +7,12 @@ const zlib = require('zlib')
 module.exports = {
   init (mdinst, conf) {
     mdinst.use((md, opts) => {
-      const openMarker = opts.openMarker || '@startuml'
+      const openMarker = opts.openMarker || '```plantuml'
       const openChar = openMarker.charCodeAt(0)
-      const closeMarker = opts.closeMarker || '@enduml'
+      const closeMarker = opts.closeMarker || '```'
       const closeChar = closeMarker.charCodeAt(0)
       const imageFormat = opts.imageFormat || 'svg'
-      const server = opts.server || 'https://www.plantuml.com/plantuml'
+      const server = opts.server || 'https://plantuml.requarks.io'
 
       md.block.ruler.before('fence', 'uml_diagram', (state, startLine, endLine, silent) => {
         let nextLine